Monthly Archives: October 2016

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AMSTERDAM_074.WAV

Category : Microsoft DLL

Microsoft Solutions for AMSTERDAM_074.WAV

Notice: Windows Error AMSTERDAM_074.WAV happens when your operating system becomes misconfigured, important system files go missing or get damaged. This is a common problem with computers that don’t get maintained regularly. Eventually the system becomes overloaded with problems and begins to crash and display errors.

Recommended Solution: We recommend you download our repair tool. It is designed to diagnose problems on your computer and fix them in just a few minutes with only a few mouse clicks.

Download Microsoft Windows Error Repair Tool

File Size: 6.7 MB
Compatible: Microsoft Windows XP/Vista/7/8/10 (32/64-BIT)
Instructions to diagnose and fix Windows Errors problems:

Please follow the following 3 steps to diagnose and fix your problem:

STEP 1: Download Windows AMSTERDAM_074.WAV Diagnostics Tool

STEP 2: Click Scan to Find The Issue.

STEP 3: Click Fix Errors to Repair Error.

Note: With all the new additional features now included in the repair tool, you will be able to optimize your system to run even faster and stable. It’s not unusual to see an increase of 95%+ in performance.

Operating System Compatibility:Windows XP/Vista/7/8/10 (32/64BIT)
Download Size: 6.7 MB
Version 2015
Expert Support: Yes

For the Microsoft Windows operating systems that are listed in the “Applies to” section, much of the functionality of the operating system is provided by dynamic link libraries (DLL). Additionally, when you run a program on one of these Windows operating systems, much of the functionality of the program may be provided by DLLs. For example, some programs may contain many different modules, and each module of the program is contained and distributed in DLLs.

The use of DLLs helps promote modularization of code, code reuse, efficient memory usage, and reduced disk space. Therefore, the operating system and the programs load faster, run faster, and take less disk space on the computer.

When a program uses a DLL, an issue that is called dependency may cause the program not to run. When a program uses a DLL, a dependency is created. If another program overwrites and breaks this dependency, the original program may not successfully run.

With the introduction of the Microsoft .NET Framework, most dependency problems have been eliminated by using assemblies.
What is a DLL?

A DLL is a library that contains code and data that can be used by more than one program at the same time. For example, in Windows operating systems, the Comdlg32 DLL performs common dialog box related functions. Therefore, each program can use the functionality that is contained in this DLL to implement an Open dialog box. This helps promote code reuse and efficient memory usage.

By using a DLL, a program can be modularized into separate components. For example, an accounting program may be sold by module. Each module can be loaded into the main program at run time if that module is installed. Because the modules are separate, the load time of the program is faster, and a module is only loaded when that functionality is requested.

Download Windows AMSTERDAM_074.WAV Diagnostics Tool

Additionally, updates are easier to apply to each module without affecting other parts of the program. For example, you may have a payroll program, and the tax rates change each year. When these changes are isolated to a DLL, you can apply an update without needing to build or install the whole program again.

The following list describes some of the files that are implemented as DLLs in Windows operating systems:
ActiveX Controls (.ocx) files
An example of an ActiveX control is a calendar control that lets you select a date from a calendar.
Control Panel (.cpl) files
An example of a .cpl file is an item that is located in Control Panel. Each item is a specialized DLL.
Device driver (.drv) files
An example of a device driver is a printer driver that controls the printing to a printer.
DLL advantages

The following list describes some of the advantages that are provided when a program uses a DLL:
Uses fewer resources
When multiple programs use the same library of functions, a DLL can reduce the duplication of code that is loaded on the disk and in physical memory. This can greatly influence the performance of not just the program that is running in the foreground, but also other programs that are running on the Windows operating system.
Promotes modular architecture
A DLL helps promote developing modular programs. This helps you develop large programs that require multiple language versions or a program that requires modular architecture. An example of a modular program is an accounting program that has many modules that can be dynamically loaded at run time.
Eases deployment and installation
When a function within a DLL needs an update or a fix, the deployment and installation of the DLL does not require the program to be relinked with the DLL. Additionally, if multiple programs use the same DLL, the multiple programs will all benefit from the update or the fix. This issue may more frequently occur when you use a third-party DLL that is regularly updated or fixed.
DLL dependencies

When a program or a DLL uses a DLL function in another DLL, a dependency is created. Therefore, the program is no longer self-contained, and the program may experience problems if the dependency is broken. For example, the program may not run if one of the following actions occurs:
A dependent DLL is upgraded to a new version.
A dependent DLL is fixed.
A dependent DLL is overwritten with an earlier version.
A dependent DLL is removed from the computer.
These actions are generally known as DLL conflicts. If backward compatibility is not enforced, the program may not successfully run.

The following list describes the changes that have been introduced in Microsoft Windows 2000 and in later Windows operating systems to help minimize dependency issues:
Windows File Protection
In Windows File Protection, the operating system prevents system DLLs from being updated or deleted by an unauthorized agent. Therefore, when a program installation tries to remove or update a DLL that is defined as a system DLL, Windows File Protection will look for a valid digital signature.
Private DLLs
Private DLLs let you isolate a program from changes that are made to shared DLLs. Private DLLs use version-specific information or an empty .local file to enforce the version of the DLL that is used by the program. To use private DLLs, locate your DLLs in the program root folder. Then, for new programs, add version-specific information to the DLL. For old programs, use an empty .local file. Each method tells the operating system to use the private DLLs that are located in the program root folder.

DLL dependencies

When a program or a DLL uses a DLL function in another DLL, a dependency is created. Therefore, the program is no longer self-contained, and the program may experience problems if the dependency is broken. For example, the program may not run if one of the following actions occurs:
A dependent DLL is upgraded to a new version.
A dependent DLL is fixed.
A dependent DLL is overwritten with an earlier version.
A dependent DLL is removed from the computer.
These actions are generally known as DLL conflicts. If backward compatibility is not enforced, the program may not successfully run.

The following list describes the changes that have been introduced in Microsoft Windows 2000 and in later Windows operating systems to help minimize dependency issues:
Windows File Protection
In Windows File Protection, the operating system prevents system DLLs from being updated or deleted by an unauthorized agent. Therefore, when a program installation tries to remove or update a DLL that is defined as a system DLL, Windows File Protection will look for a valid digital signature.
Private DLLs
Private DLLs let you isolate a program from changes that are made to shared DLLs. Private DLLs use version-specific information or an empty .local file to enforce the version of the DLL that is used by the program. To use private DLLs, locate your DLLs in the program root folder. Then, for new programs, add version-specific information to the DLL. For old programs, use an empty .local file. Each method tells the operating system to use the private DLLs that are located in the program root folder.

DLL development

This section describes the issues and the requirements that you should consider when you develop your own DLLs.
Types of DLLs

When you load a DLL in an application, two methods of linking let you call the exported DLL functions. The two methods of linking are load-time dynamic linking and run-time dynamic linking.
Load-time dynamic linking
In load-time dynamic linking, an application makes explicit calls to exported DLL functions like local functions. To use load-time dynamic linking, provide a header (.h) file and an import library (.lib) file when you compile and link the application. When you do this, the linker will provide the system with the information that is required to load the DLL and resolve the exported DLL function locations at load time.
Run-time dynamic linking
In run-time dynamic linking, an application calls either the LoadLibrary function or the LoadLibraryEx function to load the DLL at run time. After the DLL is successfully loaded, you use the GetProcAddress function to obtain the address of the exported DLL function that you want to call. When you use run-time dynamic linking, you do not need an import library file.

The following list describes the application criteria for when to use load-time dynamic linking and when to use run-time dynamic linking:
Startup performance
If the initial startup performance of the application is important, you should use run-time dynamic linking.
Ease of use
In load-time dynamic linking, the exported DLL functions are like local functions. This makes it easy for you to call these functions.
Application logic
In run-time dynamic linking, an application can branch to load different modules as required. This is important when you develop multiple-language versions.
The DLL entry point

When you create a DLL, you can optionally specify an entry point function. The entry point function is called when processes or threads attach themselves to the DLL or detached themselves from the DLL. You can use the entry point function to initialize data structures or to destroy data structures as required by the DLL. Additionally, if the application is multithreaded, you can use thread local storage (TLS) to allocate memory that is private to each thread in the entry point function. The following code is an example of the DLL entry point function.
BOOL APIENTRY DllMain(
HANDLE hModule, // Handle to DLL module
DWORD ul_reason_for_call, // Reason for calling function
LPVOID lpReserved ) // Reserved

switch ( ul_reason_for_call )

case DLL_PROCESS_ATTACHED:
// A process is loading the DLL.
break;
case DLL_THREAD_ATTACHED:
// A process is creating a new thread.
break;
case DLL_THREAD_DETACH:
// A thread exits normally.
break;
case DLL_PROCESS_DETACH:
// A process unloads the DLL.
break;

return TRUE;

When the entry point function returns a FALSE value, the application will not start if you are using load-time dynamic linking. If you are using run-time dynamic linking, only the individual DLL will not load.

The entry point function should only perform simple initialization tasks and should not call any other DLL loading or termination functions. For example, in the entry point function, you should not directly or indirectly call the LoadLibrary function or the LoadLibraryEx function. Additionally, you should not call the FreeLibrary function when the process is terminating.

Note In multithreaded applications, make sure that access to the DLL global data is synchronized (thread safe) to avoid possible data corruption. To do this, use TLS to provide unique data for each thread.
Exporting DLL functions

How to Fix AMSTERDAM_074.WAV

Download Windows AMSTERDAM_074.WAV Diagnostics Tool

To export DLL functions, you can either add a function keyword to the exported DLL functions or create a module definition (.def) file that lists the exported DLL functions.

To use a function keyword, you must declare each function that you want to export with the following keyword:
__declspec(dllexport)
To use exported DLL functions in the application, you must declare each function that you want to import with the following keyword:
__declspec(dllimport)
Typically, you would use one header file that has a define statement and an ifdef statement to separate the export statement and the import statement.

You can also use a module definition file to declare exported DLL functions. When you use a module definition file, you do not have to add the function keyword to the exported DLL functions. In the module definition file, you declare the LIBRARY statement and the EXPORTS statement for the DLL. The following code is an example of a definition file.
// SampleDLL.def
//
LIBRARY “sampleDLL”

EXPORTS
HelloWorld
Sample DLL and application

In Microsoft Visual C++ 6.0, you can create a DLL by selecting either the Win32 Dynamic-Link Library project type or the MFC AppWizard (dll) project type.

The following code is an example of a DLL that was created in Visual C++ by using the Win32 Dynamic-Link Library project type.
// SampleDLL.cpp
//

#include “stdafx.h”
#define EXPORTING_DLL
#include “sampleDLL.h”

BOOL APIENTRY DllMain( HANDLE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved
)

return TRUE;

void HelloWorld()

MessageBox( NULL, TEXT(“Hello World”), TEXT(“In a DLL”), MB_OK);

// File: SampleDLL.h
//
#ifndef INDLL_H
#define INDLL_H

#ifdef EXPORTING_DLL
extern __declspec(dllexport) void HelloWorld() ;
#else
extern __declspec(dllimport) void HelloWorld() ;
#endif

#endif
The following code is an example of a Win32 Application project that calls the exported DLL function in the SampleDLL DLL.
// SampleApp.cpp
//

#include “stdafx.h”
#include “sampleDLL.h”

int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)

HelloWorld();
return 0;

Note In load-time dynamic linking, you must link the SampleDLL.lib import library that is created when you build the SampleDLL project.

In run-time dynamic linking, you use code that is similar to the following code to call the SampleDLL.dll exported DLL function.

typedef VOID (*DLLPROC) (LPTSTR);

HINSTANCE hinstDLL;
DLLPROC HelloWorld;
BOOL fFreeDLL;

hinstDLL = LoadLibrary(“sampleDLL.dll”);
if (hinstDLL != NULL)

HelloWorld = (DLLPROC) GetProcAddress(hinstDLL, “HelloWorld”);
if (HelloWorld != NULL)
(HelloWorld);

fFreeDLL = FreeLibrary(hinstDLL);


When you compile and link the SampleDLL application, the Windows operating system searches for the SampleDLL DLL in the following locations in this order:
The application folder
The current folder
The Windows system folder

Note The Get System Directory function returns the path of the Windows system folder.
The Windows folder

Note The Get Windows Directory function returns the path of the Windows folder.
The .NET Framework assembly

With the introduction of Microsoft .NET and the .NET Framework, most of the problems that are associated with DLLs have been eliminated by using assemblies. An assembly is a logical unit of functionality that runs under the control of the .NET common language runtime (CLR). An assembly physically exists as a .dll file or as an .exe file. However, internally an assembly is very different from a Microsoft Win32 DLL.

The following information is included in the assembly manifest:Assembly name
Version information
Culture information
Strong name information
The assembly list of files
Type reference information
Referenced and dependent assembly information
The MSIL code that is contained in the assembly cannot be directly executed.

NET project.

NET 2002 Academic Edition
Microsoft Visual Studio 6.

Download Windows AMSTERDAM_074.WAV Diagnostics Tool


  • -

AMSTERDAM_073.WAV

Category : Microsoft DLL

Microsoft Solutions for AMSTERDAM_073.WAV

Notice: Windows Error AMSTERDAM_073.WAV happens when your operating system becomes misconfigured, important system files go missing or get damaged. This is a common problem with computers that don’t get maintained regularly. Eventually the system becomes overloaded with problems and begins to crash and display errors.

Recommended Solution: We recommend you download our repair tool. It is designed to diagnose problems on your computer and fix them in just a few minutes with only a few mouse clicks.

Download Microsoft Windows Error Repair Tool

File Size: 6.7 MB
Compatible: Microsoft Windows XP/Vista/7/8/10 (32/64-BIT)
Instructions to diagnose and fix Windows Errors problems:

Please follow the following 3 steps to diagnose and fix your problem:

STEP 1: Download Windows AMSTERDAM_073.WAV Diagnostics Tool

STEP 2: Click Scan to Find The Issue.

STEP 3: Click Fix Errors to Repair Error.

Note: With all the new additional features now included in the repair tool, you will be able to optimize your system to run even faster and stable. It’s not unusual to see an increase of 95%+ in performance.

Operating System Compatibility:Windows XP/Vista/7/8/10 (32/64BIT)
Download Size: 6.7 MB
Version 2015
Expert Support: Yes

For the Microsoft Windows operating systems that are listed in the “Applies to” section, much of the functionality of the operating system is provided by dynamic link libraries (DLL). Additionally, when you run a program on one of these Windows operating systems, much of the functionality of the program may be provided by DLLs. For example, some programs may contain many different modules, and each module of the program is contained and distributed in DLLs.

The use of DLLs helps promote modularization of code, code reuse, efficient memory usage, and reduced disk space. Therefore, the operating system and the programs load faster, run faster, and take less disk space on the computer.

When a program uses a DLL, an issue that is called dependency may cause the program not to run. When a program uses a DLL, a dependency is created. If another program overwrites and breaks this dependency, the original program may not successfully run.

With the introduction of the Microsoft .NET Framework, most dependency problems have been eliminated by using assemblies.
What is a DLL?

A DLL is a library that contains code and data that can be used by more than one program at the same time. For example, in Windows operating systems, the Comdlg32 DLL performs common dialog box related functions. Therefore, each program can use the functionality that is contained in this DLL to implement an Open dialog box. This helps promote code reuse and efficient memory usage.

By using a DLL, a program can be modularized into separate components. For example, an accounting program may be sold by module. Each module can be loaded into the main program at run time if that module is installed. Because the modules are separate, the load time of the program is faster, and a module is only loaded when that functionality is requested.

Download Windows AMSTERDAM_073.WAV Diagnostics Tool

Additionally, updates are easier to apply to each module without affecting other parts of the program. For example, you may have a payroll program, and the tax rates change each year. When these changes are isolated to a DLL, you can apply an update without needing to build or install the whole program again.

The following list describes some of the files that are implemented as DLLs in Windows operating systems:
ActiveX Controls (.ocx) files
An example of an ActiveX control is a calendar control that lets you select a date from a calendar.
Control Panel (.cpl) files
An example of a .cpl file is an item that is located in Control Panel. Each item is a specialized DLL.
Device driver (.drv) files
An example of a device driver is a printer driver that controls the printing to a printer.
DLL advantages

The following list describes some of the advantages that are provided when a program uses a DLL:
Uses fewer resources
When multiple programs use the same library of functions, a DLL can reduce the duplication of code that is loaded on the disk and in physical memory. This can greatly influence the performance of not just the program that is running in the foreground, but also other programs that are running on the Windows operating system.
Promotes modular architecture
A DLL helps promote developing modular programs. This helps you develop large programs that require multiple language versions or a program that requires modular architecture. An example of a modular program is an accounting program that has many modules that can be dynamically loaded at run time.
Eases deployment and installation
When a function within a DLL needs an update or a fix, the deployment and installation of the DLL does not require the program to be relinked with the DLL. Additionally, if multiple programs use the same DLL, the multiple programs will all benefit from the update or the fix. This issue may more frequently occur when you use a third-party DLL that is regularly updated or fixed.
DLL dependencies

When a program or a DLL uses a DLL function in another DLL, a dependency is created. Therefore, the program is no longer self-contained, and the program may experience problems if the dependency is broken. For example, the program may not run if one of the following actions occurs:
A dependent DLL is upgraded to a new version.
A dependent DLL is fixed.
A dependent DLL is overwritten with an earlier version.
A dependent DLL is removed from the computer.
These actions are generally known as DLL conflicts. If backward compatibility is not enforced, the program may not successfully run.

The following list describes the changes that have been introduced in Microsoft Windows 2000 and in later Windows operating systems to help minimize dependency issues:
Windows File Protection
In Windows File Protection, the operating system prevents system DLLs from being updated or deleted by an unauthorized agent. Therefore, when a program installation tries to remove or update a DLL that is defined as a system DLL, Windows File Protection will look for a valid digital signature.
Private DLLs
Private DLLs let you isolate a program from changes that are made to shared DLLs. Private DLLs use version-specific information or an empty .local file to enforce the version of the DLL that is used by the program. To use private DLLs, locate your DLLs in the program root folder. Then, for new programs, add version-specific information to the DLL. For old programs, use an empty .local file. Each method tells the operating system to use the private DLLs that are located in the program root folder.

DLL dependencies

When a program or a DLL uses a DLL function in another DLL, a dependency is created. Therefore, the program is no longer self-contained, and the program may experience problems if the dependency is broken. For example, the program may not run if one of the following actions occurs:
A dependent DLL is upgraded to a new version.
A dependent DLL is fixed.
A dependent DLL is overwritten with an earlier version.
A dependent DLL is removed from the computer.
These actions are generally known as DLL conflicts. If backward compatibility is not enforced, the program may not successfully run.

The following list describes the changes that have been introduced in Microsoft Windows 2000 and in later Windows operating systems to help minimize dependency issues:
Windows File Protection
In Windows File Protection, the operating system prevents system DLLs from being updated or deleted by an unauthorized agent. Therefore, when a program installation tries to remove or update a DLL that is defined as a system DLL, Windows File Protection will look for a valid digital signature.
Private DLLs
Private DLLs let you isolate a program from changes that are made to shared DLLs. Private DLLs use version-specific information or an empty .local file to enforce the version of the DLL that is used by the program. To use private DLLs, locate your DLLs in the program root folder. Then, for new programs, add version-specific information to the DLL. For old programs, use an empty .local file. Each method tells the operating system to use the private DLLs that are located in the program root folder.

DLL development

This section describes the issues and the requirements that you should consider when you develop your own DLLs.
Types of DLLs

When you load a DLL in an application, two methods of linking let you call the exported DLL functions. The two methods of linking are load-time dynamic linking and run-time dynamic linking.
Load-time dynamic linking
In load-time dynamic linking, an application makes explicit calls to exported DLL functions like local functions. To use load-time dynamic linking, provide a header (.h) file and an import library (.lib) file when you compile and link the application. When you do this, the linker will provide the system with the information that is required to load the DLL and resolve the exported DLL function locations at load time.
Run-time dynamic linking
In run-time dynamic linking, an application calls either the LoadLibrary function or the LoadLibraryEx function to load the DLL at run time. After the DLL is successfully loaded, you use the GetProcAddress function to obtain the address of the exported DLL function that you want to call. When you use run-time dynamic linking, you do not need an import library file.

The following list describes the application criteria for when to use load-time dynamic linking and when to use run-time dynamic linking:
Startup performance
If the initial startup performance of the application is important, you should use run-time dynamic linking.
Ease of use
In load-time dynamic linking, the exported DLL functions are like local functions. This makes it easy for you to call these functions.
Application logic
In run-time dynamic linking, an application can branch to load different modules as required. This is important when you develop multiple-language versions.
The DLL entry point

When you create a DLL, you can optionally specify an entry point function. The entry point function is called when processes or threads attach themselves to the DLL or detached themselves from the DLL. You can use the entry point function to initialize data structures or to destroy data structures as required by the DLL. Additionally, if the application is multithreaded, you can use thread local storage (TLS) to allocate memory that is private to each thread in the entry point function. The following code is an example of the DLL entry point function.
BOOL APIENTRY DllMain(
HANDLE hModule, // Handle to DLL module
DWORD ul_reason_for_call, // Reason for calling function
LPVOID lpReserved ) // Reserved

switch ( ul_reason_for_call )

case DLL_PROCESS_ATTACHED:
// A process is loading the DLL.
break;
case DLL_THREAD_ATTACHED:
// A process is creating a new thread.
break;
case DLL_THREAD_DETACH:
// A thread exits normally.
break;
case DLL_PROCESS_DETACH:
// A process unloads the DLL.
break;

return TRUE;

When the entry point function returns a FALSE value, the application will not start if you are using load-time dynamic linking. If you are using run-time dynamic linking, only the individual DLL will not load.

The entry point function should only perform simple initialization tasks and should not call any other DLL loading or termination functions. For example, in the entry point function, you should not directly or indirectly call the LoadLibrary function or the LoadLibraryEx function. Additionally, you should not call the FreeLibrary function when the process is terminating.

Note In multithreaded applications, make sure that access to the DLL global data is synchronized (thread safe) to avoid possible data corruption. To do this, use TLS to provide unique data for each thread.
Exporting DLL functions

How to Fix AMSTERDAM_073.WAV

Download Windows AMSTERDAM_073.WAV Diagnostics Tool

To export DLL functions, you can either add a function keyword to the exported DLL functions or create a module definition (.def) file that lists the exported DLL functions.

To use a function keyword, you must declare each function that you want to export with the following keyword:
__declspec(dllexport)
To use exported DLL functions in the application, you must declare each function that you want to import with the following keyword:
__declspec(dllimport)
Typically, you would use one header file that has a define statement and an ifdef statement to separate the export statement and the import statement.

You can also use a module definition file to declare exported DLL functions. When you use a module definition file, you do not have to add the function keyword to the exported DLL functions. In the module definition file, you declare the LIBRARY statement and the EXPORTS statement for the DLL. The following code is an example of a definition file.
// SampleDLL.def
//
LIBRARY “sampleDLL”

EXPORTS
HelloWorld
Sample DLL and application

In Microsoft Visual C++ 6.0, you can create a DLL by selecting either the Win32 Dynamic-Link Library project type or the MFC AppWizard (dll) project type.

The following code is an example of a DLL that was created in Visual C++ by using the Win32 Dynamic-Link Library project type.
// SampleDLL.cpp
//

#include “stdafx.h”
#define EXPORTING_DLL
#include “sampleDLL.h”

BOOL APIENTRY DllMain( HANDLE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved
)

return TRUE;

void HelloWorld()

MessageBox( NULL, TEXT(“Hello World”), TEXT(“In a DLL”), MB_OK);

// File: SampleDLL.h
//
#ifndef INDLL_H
#define INDLL_H

#ifdef EXPORTING_DLL
extern __declspec(dllexport) void HelloWorld() ;
#else
extern __declspec(dllimport) void HelloWorld() ;
#endif

#endif
The following code is an example of a Win32 Application project that calls the exported DLL function in the SampleDLL DLL.
// SampleApp.cpp
//

#include “stdafx.h”
#include “sampleDLL.h”

int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)

HelloWorld();
return 0;

Note In load-time dynamic linking, you must link the SampleDLL.lib import library that is created when you build the SampleDLL project.

In run-time dynamic linking, you use code that is similar to the following code to call the SampleDLL.dll exported DLL function.

typedef VOID (*DLLPROC) (LPTSTR);

HINSTANCE hinstDLL;
DLLPROC HelloWorld;
BOOL fFreeDLL;

hinstDLL = LoadLibrary(“sampleDLL.dll”);
if (hinstDLL != NULL)

HelloWorld = (DLLPROC) GetProcAddress(hinstDLL, “HelloWorld”);
if (HelloWorld != NULL)
(HelloWorld);

fFreeDLL = FreeLibrary(hinstDLL);


When you compile and link the SampleDLL application, the Windows operating system searches for the SampleDLL DLL in the following locations in this order:
The application folder
The current folder
The Windows system folder

Note The Get System Directory function returns the path of the Windows system folder.
The Windows folder

Note The Get Windows Directory function returns the path of the Windows folder.
The .NET Framework assembly

With the introduction of Microsoft .NET and the .NET Framework, most of the problems that are associated with DLLs have been eliminated by using assemblies. An assembly is a logical unit of functionality that runs under the control of the .NET common language runtime (CLR). An assembly physically exists as a .dll file or as an .exe file. However, internally an assembly is very different from a Microsoft Win32 DLL.

The following information is included in the assembly manifest:Assembly name
Version information
Culture information
Strong name information
The assembly list of files
Type reference information
Referenced and dependent assembly information
The MSIL code that is contained in the assembly cannot be directly executed.

Additionally, version policies let you enforce version-specific usage.

NET 2003 Enterprise Architect
Microsoft Visual Studio .

Download Windows AMSTERDAM_073.WAV Diagnostics Tool


  • -

AMSTERDAM_072.WAV

Category : Microsoft DLL

Microsoft Solutions for AMSTERDAM_072.WAV

Notice: Windows Error AMSTERDAM_072.WAV happens when your operating system becomes misconfigured, important system files go missing or get damaged. This is a common problem with computers that don’t get maintained regularly. Eventually the system becomes overloaded with problems and begins to crash and display errors.

Recommended Solution: We recommend you download our repair tool. It is designed to diagnose problems on your computer and fix them in just a few minutes with only a few mouse clicks.

Download Microsoft Windows Error Repair Tool

File Size: 6.7 MB
Compatible: Microsoft Windows XP/Vista/7/8/10 (32/64-BIT)
Instructions to diagnose and fix Windows Errors problems:

Please follow the following 3 steps to diagnose and fix your problem:

STEP 1: Download Windows AMSTERDAM_072.WAV Diagnostics Tool

STEP 2: Click Scan to Find The Issue.

STEP 3: Click Fix Errors to Repair Error.

Note: With all the new additional features now included in the repair tool, you will be able to optimize your system to run even faster and stable. It’s not unusual to see an increase of 95%+ in performance.

Operating System Compatibility:Windows XP/Vista/7/8/10 (32/64BIT)
Download Size: 6.7 MB
Version 2015
Expert Support: Yes

For the Microsoft Windows operating systems that are listed in the “Applies to” section, much of the functionality of the operating system is provided by dynamic link libraries (DLL). Additionally, when you run a program on one of these Windows operating systems, much of the functionality of the program may be provided by DLLs. For example, some programs may contain many different modules, and each module of the program is contained and distributed in DLLs.

The use of DLLs helps promote modularization of code, code reuse, efficient memory usage, and reduced disk space. Therefore, the operating system and the programs load faster, run faster, and take less disk space on the computer.

When a program uses a DLL, an issue that is called dependency may cause the program not to run. When a program uses a DLL, a dependency is created. If another program overwrites and breaks this dependency, the original program may not successfully run.

With the introduction of the Microsoft .NET Framework, most dependency problems have been eliminated by using assemblies.
What is a DLL?

A DLL is a library that contains code and data that can be used by more than one program at the same time. For example, in Windows operating systems, the Comdlg32 DLL performs common dialog box related functions. Therefore, each program can use the functionality that is contained in this DLL to implement an Open dialog box. This helps promote code reuse and efficient memory usage.

By using a DLL, a program can be modularized into separate components. For example, an accounting program may be sold by module. Each module can be loaded into the main program at run time if that module is installed. Because the modules are separate, the load time of the program is faster, and a module is only loaded when that functionality is requested.

Download Windows AMSTERDAM_072.WAV Diagnostics Tool

Additionally, updates are easier to apply to each module without affecting other parts of the program. For example, you may have a payroll program, and the tax rates change each year. When these changes are isolated to a DLL, you can apply an update without needing to build or install the whole program again.

The following list describes some of the files that are implemented as DLLs in Windows operating systems:
ActiveX Controls (.ocx) files
An example of an ActiveX control is a calendar control that lets you select a date from a calendar.
Control Panel (.cpl) files
An example of a .cpl file is an item that is located in Control Panel. Each item is a specialized DLL.
Device driver (.drv) files
An example of a device driver is a printer driver that controls the printing to a printer.
DLL advantages

The following list describes some of the advantages that are provided when a program uses a DLL:
Uses fewer resources
When multiple programs use the same library of functions, a DLL can reduce the duplication of code that is loaded on the disk and in physical memory. This can greatly influence the performance of not just the program that is running in the foreground, but also other programs that are running on the Windows operating system.
Promotes modular architecture
A DLL helps promote developing modular programs. This helps you develop large programs that require multiple language versions or a program that requires modular architecture. An example of a modular program is an accounting program that has many modules that can be dynamically loaded at run time.
Eases deployment and installation
When a function within a DLL needs an update or a fix, the deployment and installation of the DLL does not require the program to be relinked with the DLL. Additionally, if multiple programs use the same DLL, the multiple programs will all benefit from the update or the fix. This issue may more frequently occur when you use a third-party DLL that is regularly updated or fixed.
DLL dependencies

When a program or a DLL uses a DLL function in another DLL, a dependency is created. Therefore, the program is no longer self-contained, and the program may experience problems if the dependency is broken. For example, the program may not run if one of the following actions occurs:
A dependent DLL is upgraded to a new version.
A dependent DLL is fixed.
A dependent DLL is overwritten with an earlier version.
A dependent DLL is removed from the computer.
These actions are generally known as DLL conflicts. If backward compatibility is not enforced, the program may not successfully run.

The following list describes the changes that have been introduced in Microsoft Windows 2000 and in later Windows operating systems to help minimize dependency issues:
Windows File Protection
In Windows File Protection, the operating system prevents system DLLs from being updated or deleted by an unauthorized agent. Therefore, when a program installation tries to remove or update a DLL that is defined as a system DLL, Windows File Protection will look for a valid digital signature.
Private DLLs
Private DLLs let you isolate a program from changes that are made to shared DLLs. Private DLLs use version-specific information or an empty .local file to enforce the version of the DLL that is used by the program. To use private DLLs, locate your DLLs in the program root folder. Then, for new programs, add version-specific information to the DLL. For old programs, use an empty .local file. Each method tells the operating system to use the private DLLs that are located in the program root folder.

DLL dependencies

When a program or a DLL uses a DLL function in another DLL, a dependency is created. Therefore, the program is no longer self-contained, and the program may experience problems if the dependency is broken. For example, the program may not run if one of the following actions occurs:
A dependent DLL is upgraded to a new version.
A dependent DLL is fixed.
A dependent DLL is overwritten with an earlier version.
A dependent DLL is removed from the computer.
These actions are generally known as DLL conflicts. If backward compatibility is not enforced, the program may not successfully run.

The following list describes the changes that have been introduced in Microsoft Windows 2000 and in later Windows operating systems to help minimize dependency issues:
Windows File Protection
In Windows File Protection, the operating system prevents system DLLs from being updated or deleted by an unauthorized agent. Therefore, when a program installation tries to remove or update a DLL that is defined as a system DLL, Windows File Protection will look for a valid digital signature.
Private DLLs
Private DLLs let you isolate a program from changes that are made to shared DLLs. Private DLLs use version-specific information or an empty .local file to enforce the version of the DLL that is used by the program. To use private DLLs, locate your DLLs in the program root folder. Then, for new programs, add version-specific information to the DLL. For old programs, use an empty .local file. Each method tells the operating system to use the private DLLs that are located in the program root folder.

DLL development

This section describes the issues and the requirements that you should consider when you develop your own DLLs.
Types of DLLs

When you load a DLL in an application, two methods of linking let you call the exported DLL functions. The two methods of linking are load-time dynamic linking and run-time dynamic linking.
Load-time dynamic linking
In load-time dynamic linking, an application makes explicit calls to exported DLL functions like local functions. To use load-time dynamic linking, provide a header (.h) file and an import library (.lib) file when you compile and link the application. When you do this, the linker will provide the system with the information that is required to load the DLL and resolve the exported DLL function locations at load time.
Run-time dynamic linking
In run-time dynamic linking, an application calls either the LoadLibrary function or the LoadLibraryEx function to load the DLL at run time. After the DLL is successfully loaded, you use the GetProcAddress function to obtain the address of the exported DLL function that you want to call. When you use run-time dynamic linking, you do not need an import library file.

The following list describes the application criteria for when to use load-time dynamic linking and when to use run-time dynamic linking:
Startup performance
If the initial startup performance of the application is important, you should use run-time dynamic linking.
Ease of use
In load-time dynamic linking, the exported DLL functions are like local functions. This makes it easy for you to call these functions.
Application logic
In run-time dynamic linking, an application can branch to load different modules as required. This is important when you develop multiple-language versions.
The DLL entry point

When you create a DLL, you can optionally specify an entry point function. The entry point function is called when processes or threads attach themselves to the DLL or detached themselves from the DLL. You can use the entry point function to initialize data structures or to destroy data structures as required by the DLL. Additionally, if the application is multithreaded, you can use thread local storage (TLS) to allocate memory that is private to each thread in the entry point function. The following code is an example of the DLL entry point function.
BOOL APIENTRY DllMain(
HANDLE hModule, // Handle to DLL module
DWORD ul_reason_for_call, // Reason for calling function
LPVOID lpReserved ) // Reserved

switch ( ul_reason_for_call )

case DLL_PROCESS_ATTACHED:
// A process is loading the DLL.
break;
case DLL_THREAD_ATTACHED:
// A process is creating a new thread.
break;
case DLL_THREAD_DETACH:
// A thread exits normally.
break;
case DLL_PROCESS_DETACH:
// A process unloads the DLL.
break;

return TRUE;

When the entry point function returns a FALSE value, the application will not start if you are using load-time dynamic linking. If you are using run-time dynamic linking, only the individual DLL will not load.

The entry point function should only perform simple initialization tasks and should not call any other DLL loading or termination functions. For example, in the entry point function, you should not directly or indirectly call the LoadLibrary function or the LoadLibraryEx function. Additionally, you should not call the FreeLibrary function when the process is terminating.

Note In multithreaded applications, make sure that access to the DLL global data is synchronized (thread safe) to avoid possible data corruption. To do this, use TLS to provide unique data for each thread.
Exporting DLL functions

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To export DLL functions, you can either add a function keyword to the exported DLL functions or create a module definition (.def) file that lists the exported DLL functions.

To use a function keyword, you must declare each function that you want to export with the following keyword:
__declspec(dllexport)
To use exported DLL functions in the application, you must declare each function that you want to import with the following keyword:
__declspec(dllimport)
Typically, you would use one header file that has a define statement and an ifdef statement to separate the export statement and the import statement.

You can also use a module definition file to declare exported DLL functions. When you use a module definition file, you do not have to add the function keyword to the exported DLL functions. In the module definition file, you declare the LIBRARY statement and the EXPORTS statement for the DLL. The following code is an example of a definition file.
// SampleDLL.def
//
LIBRARY “sampleDLL”

EXPORTS
HelloWorld
Sample DLL and application

In Microsoft Visual C++ 6.0, you can create a DLL by selecting either the Win32 Dynamic-Link Library project type or the MFC AppWizard (dll) project type.

The following code is an example of a DLL that was created in Visual C++ by using the Win32 Dynamic-Link Library project type.
// SampleDLL.cpp
//

#include “stdafx.h”
#define EXPORTING_DLL
#include “sampleDLL.h”

BOOL APIENTRY DllMain( HANDLE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved
)

return TRUE;

void HelloWorld()

MessageBox( NULL, TEXT(“Hello World”), TEXT(“In a DLL”), MB_OK);

// File: SampleDLL.h
//
#ifndef INDLL_H
#define INDLL_H

#ifdef EXPORTING_DLL
extern __declspec(dllexport) void HelloWorld() ;
#else
extern __declspec(dllimport) void HelloWorld() ;
#endif

#endif
The following code is an example of a Win32 Application project that calls the exported DLL function in the SampleDLL DLL.
// SampleApp.cpp
//

#include “stdafx.h”
#include “sampleDLL.h”

int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)

HelloWorld();
return 0;

Note In load-time dynamic linking, you must link the SampleDLL.lib import library that is created when you build the SampleDLL project.

In run-time dynamic linking, you use code that is similar to the following code to call the SampleDLL.dll exported DLL function.

typedef VOID (*DLLPROC) (LPTSTR);

HINSTANCE hinstDLL;
DLLPROC HelloWorld;
BOOL fFreeDLL;

hinstDLL = LoadLibrary(“sampleDLL.dll”);
if (hinstDLL != NULL)

HelloWorld = (DLLPROC) GetProcAddress(hinstDLL, “HelloWorld”);
if (HelloWorld != NULL)
(HelloWorld);

fFreeDLL = FreeLibrary(hinstDLL);


When you compile and link the SampleDLL application, the Windows operating system searches for the SampleDLL DLL in the following locations in this order:
The application folder
The current folder
The Windows system folder

Note The Get System Directory function returns the path of the Windows system folder.
The Windows folder

Note The Get Windows Directory function returns the path of the Windows folder.
The .NET Framework assembly

With the introduction of Microsoft .NET and the .NET Framework, most of the problems that are associated with DLLs have been eliminated by using assemblies. An assembly is a logical unit of functionality that runs under the control of the .NET common language runtime (CLR). An assembly physically exists as a .dll file or as an .exe file. However, internally an assembly is very different from a Microsoft Win32 DLL.

The assembly manifest contains the assembly metadata that provides all the information that is required for an assembly to be self-describing.

The following list describes some of the features of assemblies compared to the features of Win32 DLLs:Self-describing
When you create an assembly, all the information that is required for the CLR to run the assembly is contained in the assembly manifest.

APPLIES TOMicrosoft Windows 8
Microsoft Windows 7
Microsoft Windows Vista (32-bit x86)
Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)
Microsoft Windows Server 2003, Datacenter Edition for Itanium-Based Systems
Microsoft Windows Server 2003, Datacenter x64 Edition
Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems
Microsoft Windows Server 2003, Enterprise x64 Edition
Microsoft Windows Server 2003, Standard Edition (32-bit x86)
Microsoft Windows Server 2003, Standard x64 Edition
Microsoft Windows Server 2003, Web Edition
Microsoft Windows 2000 Advanced Server
Microsoft Windows 2000 Datacenter Server
Microsoft Windows 2000 Server
Microsoft Windows XP Professional
Microsoft Windows XP Home Edition
Microsoft Windows XP Media Center Edition 2005 Update Rollup 2
Microsoft Windows XP Tablet PC Edition
Microsoft Windows 2000 Professional Edition
Microsoft Windows NT 4.

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  • -

AMSTERDAM_071.WAV

Category : Microsoft DLL

Microsoft Solutions for AMSTERDAM_071.WAV

Notice: Windows Error AMSTERDAM_071.WAV happens when your operating system becomes misconfigured, important system files go missing or get damaged. This is a common problem with computers that don’t get maintained regularly. Eventually the system becomes overloaded with problems and begins to crash and display errors.

Recommended Solution: We recommend you download our repair tool. It is designed to diagnose problems on your computer and fix them in just a few minutes with only a few mouse clicks.

Download Microsoft Windows Error Repair Tool

File Size: 6.7 MB
Compatible: Microsoft Windows XP/Vista/7/8/10 (32/64-BIT)
Instructions to diagnose and fix Windows Errors problems:

Please follow the following 3 steps to diagnose and fix your problem:

STEP 1: Download Windows AMSTERDAM_071.WAV Diagnostics Tool

STEP 2: Click Scan to Find The Issue.

STEP 3: Click Fix Errors to Repair Error.

Note: With all the new additional features now included in the repair tool, you will be able to optimize your system to run even faster and stable. It’s not unusual to see an increase of 95%+ in performance.

Operating System Compatibility:Windows XP/Vista/7/8/10 (32/64BIT)
Download Size: 6.7 MB
Version 2015
Expert Support: Yes

For the Microsoft Windows operating systems that are listed in the “Applies to” section, much of the functionality of the operating system is provided by dynamic link libraries (DLL). Additionally, when you run a program on one of these Windows operating systems, much of the functionality of the program may be provided by DLLs. For example, some programs may contain many different modules, and each module of the program is contained and distributed in DLLs.

The use of DLLs helps promote modularization of code, code reuse, efficient memory usage, and reduced disk space. Therefore, the operating system and the programs load faster, run faster, and take less disk space on the computer.

When a program uses a DLL, an issue that is called dependency may cause the program not to run. When a program uses a DLL, a dependency is created. If another program overwrites and breaks this dependency, the original program may not successfully run.

With the introduction of the Microsoft .NET Framework, most dependency problems have been eliminated by using assemblies.
What is a DLL?

A DLL is a library that contains code and data that can be used by more than one program at the same time. For example, in Windows operating systems, the Comdlg32 DLL performs common dialog box related functions. Therefore, each program can use the functionality that is contained in this DLL to implement an Open dialog box. This helps promote code reuse and efficient memory usage.

By using a DLL, a program can be modularized into separate components. For example, an accounting program may be sold by module. Each module can be loaded into the main program at run time if that module is installed. Because the modules are separate, the load time of the program is faster, and a module is only loaded when that functionality is requested.

Download Windows AMSTERDAM_071.WAV Diagnostics Tool

Additionally, updates are easier to apply to each module without affecting other parts of the program. For example, you may have a payroll program, and the tax rates change each year. When these changes are isolated to a DLL, you can apply an update without needing to build or install the whole program again.

The following list describes some of the files that are implemented as DLLs in Windows operating systems:
ActiveX Controls (.ocx) files
An example of an ActiveX control is a calendar control that lets you select a date from a calendar.
Control Panel (.cpl) files
An example of a .cpl file is an item that is located in Control Panel. Each item is a specialized DLL.
Device driver (.drv) files
An example of a device driver is a printer driver that controls the printing to a printer.
DLL advantages

The following list describes some of the advantages that are provided when a program uses a DLL:
Uses fewer resources
When multiple programs use the same library of functions, a DLL can reduce the duplication of code that is loaded on the disk and in physical memory. This can greatly influence the performance of not just the program that is running in the foreground, but also other programs that are running on the Windows operating system.
Promotes modular architecture
A DLL helps promote developing modular programs. This helps you develop large programs that require multiple language versions or a program that requires modular architecture. An example of a modular program is an accounting program that has many modules that can be dynamically loaded at run time.
Eases deployment and installation
When a function within a DLL needs an update or a fix, the deployment and installation of the DLL does not require the program to be relinked with the DLL. Additionally, if multiple programs use the same DLL, the multiple programs will all benefit from the update or the fix. This issue may more frequently occur when you use a third-party DLL that is regularly updated or fixed.
DLL dependencies

When a program or a DLL uses a DLL function in another DLL, a dependency is created. Therefore, the program is no longer self-contained, and the program may experience problems if the dependency is broken. For example, the program may not run if one of the following actions occurs:
A dependent DLL is upgraded to a new version.
A dependent DLL is fixed.
A dependent DLL is overwritten with an earlier version.
A dependent DLL is removed from the computer.
These actions are generally known as DLL conflicts. If backward compatibility is not enforced, the program may not successfully run.

The following list describes the changes that have been introduced in Microsoft Windows 2000 and in later Windows operating systems to help minimize dependency issues:
Windows File Protection
In Windows File Protection, the operating system prevents system DLLs from being updated or deleted by an unauthorized agent. Therefore, when a program installation tries to remove or update a DLL that is defined as a system DLL, Windows File Protection will look for a valid digital signature.
Private DLLs
Private DLLs let you isolate a program from changes that are made to shared DLLs. Private DLLs use version-specific information or an empty .local file to enforce the version of the DLL that is used by the program. To use private DLLs, locate your DLLs in the program root folder. Then, for new programs, add version-specific information to the DLL. For old programs, use an empty .local file. Each method tells the operating system to use the private DLLs that are located in the program root folder.

DLL dependencies

When a program or a DLL uses a DLL function in another DLL, a dependency is created. Therefore, the program is no longer self-contained, and the program may experience problems if the dependency is broken. For example, the program may not run if one of the following actions occurs:
A dependent DLL is upgraded to a new version.
A dependent DLL is fixed.
A dependent DLL is overwritten with an earlier version.
A dependent DLL is removed from the computer.
These actions are generally known as DLL conflicts. If backward compatibility is not enforced, the program may not successfully run.

The following list describes the changes that have been introduced in Microsoft Windows 2000 and in later Windows operating systems to help minimize dependency issues:
Windows File Protection
In Windows File Protection, the operating system prevents system DLLs from being updated or deleted by an unauthorized agent. Therefore, when a program installation tries to remove or update a DLL that is defined as a system DLL, Windows File Protection will look for a valid digital signature.
Private DLLs
Private DLLs let you isolate a program from changes that are made to shared DLLs. Private DLLs use version-specific information or an empty .local file to enforce the version of the DLL that is used by the program. To use private DLLs, locate your DLLs in the program root folder. Then, for new programs, add version-specific information to the DLL. For old programs, use an empty .local file. Each method tells the operating system to use the private DLLs that are located in the program root folder.

DLL development

This section describes the issues and the requirements that you should consider when you develop your own DLLs.
Types of DLLs

When you load a DLL in an application, two methods of linking let you call the exported DLL functions. The two methods of linking are load-time dynamic linking and run-time dynamic linking.
Load-time dynamic linking
In load-time dynamic linking, an application makes explicit calls to exported DLL functions like local functions. To use load-time dynamic linking, provide a header (.h) file and an import library (.lib) file when you compile and link the application. When you do this, the linker will provide the system with the information that is required to load the DLL and resolve the exported DLL function locations at load time.
Run-time dynamic linking
In run-time dynamic linking, an application calls either the LoadLibrary function or the LoadLibraryEx function to load the DLL at run time. After the DLL is successfully loaded, you use the GetProcAddress function to obtain the address of the exported DLL function that you want to call. When you use run-time dynamic linking, you do not need an import library file.

The following list describes the application criteria for when to use load-time dynamic linking and when to use run-time dynamic linking:
Startup performance
If the initial startup performance of the application is important, you should use run-time dynamic linking.
Ease of use
In load-time dynamic linking, the exported DLL functions are like local functions. This makes it easy for you to call these functions.
Application logic
In run-time dynamic linking, an application can branch to load different modules as required. This is important when you develop multiple-language versions.
The DLL entry point

When you create a DLL, you can optionally specify an entry point function. The entry point function is called when processes or threads attach themselves to the DLL or detached themselves from the DLL. You can use the entry point function to initialize data structures or to destroy data structures as required by the DLL. Additionally, if the application is multithreaded, you can use thread local storage (TLS) to allocate memory that is private to each thread in the entry point function. The following code is an example of the DLL entry point function.
BOOL APIENTRY DllMain(
HANDLE hModule, // Handle to DLL module
DWORD ul_reason_for_call, // Reason for calling function
LPVOID lpReserved ) // Reserved

switch ( ul_reason_for_call )

case DLL_PROCESS_ATTACHED:
// A process is loading the DLL.
break;
case DLL_THREAD_ATTACHED:
// A process is creating a new thread.
break;
case DLL_THREAD_DETACH:
// A thread exits normally.
break;
case DLL_PROCESS_DETACH:
// A process unloads the DLL.
break;

return TRUE;

When the entry point function returns a FALSE value, the application will not start if you are using load-time dynamic linking. If you are using run-time dynamic linking, only the individual DLL will not load.

The entry point function should only perform simple initialization tasks and should not call any other DLL loading or termination functions. For example, in the entry point function, you should not directly or indirectly call the LoadLibrary function or the LoadLibraryEx function. Additionally, you should not call the FreeLibrary function when the process is terminating.

Note In multithreaded applications, make sure that access to the DLL global data is synchronized (thread safe) to avoid possible data corruption. To do this, use TLS to provide unique data for each thread.
Exporting DLL functions

How to Fix AMSTERDAM_071.WAV

Download Windows AMSTERDAM_071.WAV Diagnostics Tool

To export DLL functions, you can either add a function keyword to the exported DLL functions or create a module definition (.def) file that lists the exported DLL functions.

To use a function keyword, you must declare each function that you want to export with the following keyword:
__declspec(dllexport)
To use exported DLL functions in the application, you must declare each function that you want to import with the following keyword:
__declspec(dllimport)
Typically, you would use one header file that has a define statement and an ifdef statement to separate the export statement and the import statement.

You can also use a module definition file to declare exported DLL functions. When you use a module definition file, you do not have to add the function keyword to the exported DLL functions. In the module definition file, you declare the LIBRARY statement and the EXPORTS statement for the DLL. The following code is an example of a definition file.
// SampleDLL.def
//
LIBRARY “sampleDLL”

EXPORTS
HelloWorld
Sample DLL and application

In Microsoft Visual C++ 6.0, you can create a DLL by selecting either the Win32 Dynamic-Link Library project type or the MFC AppWizard (dll) project type.

The following code is an example of a DLL that was created in Visual C++ by using the Win32 Dynamic-Link Library project type.
// SampleDLL.cpp
//

#include “stdafx.h”
#define EXPORTING_DLL
#include “sampleDLL.h”

BOOL APIENTRY DllMain( HANDLE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved
)

return TRUE;

void HelloWorld()

MessageBox( NULL, TEXT(“Hello World”), TEXT(“In a DLL”), MB_OK);

// File: SampleDLL.h
//
#ifndef INDLL_H
#define INDLL_H

#ifdef EXPORTING_DLL
extern __declspec(dllexport) void HelloWorld() ;
#else
extern __declspec(dllimport) void HelloWorld() ;
#endif

#endif
The following code is an example of a Win32 Application project that calls the exported DLL function in the SampleDLL DLL.
// SampleApp.cpp
//

#include “stdafx.h”
#include “sampleDLL.h”

int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)

HelloWorld();
return 0;

Note In load-time dynamic linking, you must link the SampleDLL.lib import library that is created when you build the SampleDLL project.

In run-time dynamic linking, you use code that is similar to the following code to call the SampleDLL.dll exported DLL function.

typedef VOID (*DLLPROC) (LPTSTR);

HINSTANCE hinstDLL;
DLLPROC HelloWorld;
BOOL fFreeDLL;

hinstDLL = LoadLibrary(“sampleDLL.dll”);
if (hinstDLL != NULL)

HelloWorld = (DLLPROC) GetProcAddress(hinstDLL, “HelloWorld”);
if (HelloWorld != NULL)
(HelloWorld);

fFreeDLL = FreeLibrary(hinstDLL);


When you compile and link the SampleDLL application, the Windows operating system searches for the SampleDLL DLL in the following locations in this order:
The application folder
The current folder
The Windows system folder

Note The Get System Directory function returns the path of the Windows system folder.
The Windows folder

Note The Get Windows Directory function returns the path of the Windows folder.
The .NET Framework assembly

With the introduction of Microsoft .NET and the .NET Framework, most of the problems that are associated with DLLs have been eliminated by using assemblies. An assembly is a logical unit of functionality that runs under the control of the .NET common language runtime (CLR). An assembly physically exists as a .dll file or as an .exe file. However, internally an assembly is very different from a Microsoft Win32 DLL.

The following information is included in the assembly manifest:Assembly name
Version information
Culture information
Strong name information
The assembly list of files
Type reference information
Referenced and dependent assembly information
The MSIL code that is contained in the assembly cannot be directly executed.

Instead, you must make sure that DLLs are backward compatible.

NET 2002 Professional Edition
Microsoft Visual Studio .

Download Windows AMSTERDAM_071.WAV Diagnostics Tool


  • -

AMSTERDAM_070.WAV

Category : Microsoft DLL

Microsoft Solutions for AMSTERDAM_070.WAV

Notice: Windows Error AMSTERDAM_070.WAV happens when your operating system becomes misconfigured, important system files go missing or get damaged. This is a common problem with computers that don’t get maintained regularly. Eventually the system becomes overloaded with problems and begins to crash and display errors.

Recommended Solution: We recommend you download our repair tool. It is designed to diagnose problems on your computer and fix them in just a few minutes with only a few mouse clicks.

Download Microsoft Windows Error Repair Tool

File Size: 6.7 MB
Compatible: Microsoft Windows XP/Vista/7/8/10 (32/64-BIT)
Instructions to diagnose and fix Windows Errors problems:

Please follow the following 3 steps to diagnose and fix your problem:

STEP 1: Download Windows AMSTERDAM_070.WAV Diagnostics Tool

STEP 2: Click Scan to Find The Issue.

STEP 3: Click Fix Errors to Repair Error.

Note: With all the new additional features now included in the repair tool, you will be able to optimize your system to run even faster and stable. It’s not unusual to see an increase of 95%+ in performance.

Operating System Compatibility:Windows XP/Vista/7/8/10 (32/64BIT)
Download Size: 6.7 MB
Version 2015
Expert Support: Yes

For the Microsoft Windows operating systems that are listed in the “Applies to” section, much of the functionality of the operating system is provided by dynamic link libraries (DLL). Additionally, when you run a program on one of these Windows operating systems, much of the functionality of the program may be provided by DLLs. For example, some programs may contain many different modules, and each module of the program is contained and distributed in DLLs.

The use of DLLs helps promote modularization of code, code reuse, efficient memory usage, and reduced disk space. Therefore, the operating system and the programs load faster, run faster, and take less disk space on the computer.

When a program uses a DLL, an issue that is called dependency may cause the program not to run. When a program uses a DLL, a dependency is created. If another program overwrites and breaks this dependency, the original program may not successfully run.

With the introduction of the Microsoft .NET Framework, most dependency problems have been eliminated by using assemblies.
What is a DLL?

A DLL is a library that contains code and data that can be used by more than one program at the same time. For example, in Windows operating systems, the Comdlg32 DLL performs common dialog box related functions. Therefore, each program can use the functionality that is contained in this DLL to implement an Open dialog box. This helps promote code reuse and efficient memory usage.

By using a DLL, a program can be modularized into separate components. For example, an accounting program may be sold by module. Each module can be loaded into the main program at run time if that module is installed. Because the modules are separate, the load time of the program is faster, and a module is only loaded when that functionality is requested.

Download Windows AMSTERDAM_070.WAV Diagnostics Tool

Additionally, updates are easier to apply to each module without affecting other parts of the program. For example, you may have a payroll program, and the tax rates change each year. When these changes are isolated to a DLL, you can apply an update without needing to build or install the whole program again.

The following list describes some of the files that are implemented as DLLs in Windows operating systems:
ActiveX Controls (.ocx) files
An example of an ActiveX control is a calendar control that lets you select a date from a calendar.
Control Panel (.cpl) files
An example of a .cpl file is an item that is located in Control Panel. Each item is a specialized DLL.
Device driver (.drv) files
An example of a device driver is a printer driver that controls the printing to a printer.
DLL advantages

The following list describes some of the advantages that are provided when a program uses a DLL:
Uses fewer resources
When multiple programs use the same library of functions, a DLL can reduce the duplication of code that is loaded on the disk and in physical memory. This can greatly influence the performance of not just the program that is running in the foreground, but also other programs that are running on the Windows operating system.
Promotes modular architecture
A DLL helps promote developing modular programs. This helps you develop large programs that require multiple language versions or a program that requires modular architecture. An example of a modular program is an accounting program that has many modules that can be dynamically loaded at run time.
Eases deployment and installation
When a function within a DLL needs an update or a fix, the deployment and installation of the DLL does not require the program to be relinked with the DLL. Additionally, if multiple programs use the same DLL, the multiple programs will all benefit from the update or the fix. This issue may more frequently occur when you use a third-party DLL that is regularly updated or fixed.
DLL dependencies

When a program or a DLL uses a DLL function in another DLL, a dependency is created. Therefore, the program is no longer self-contained, and the program may experience problems if the dependency is broken. For example, the program may not run if one of the following actions occurs:
A dependent DLL is upgraded to a new version.
A dependent DLL is fixed.
A dependent DLL is overwritten with an earlier version.
A dependent DLL is removed from the computer.
These actions are generally known as DLL conflicts. If backward compatibility is not enforced, the program may not successfully run.

The following list describes the changes that have been introduced in Microsoft Windows 2000 and in later Windows operating systems to help minimize dependency issues:
Windows File Protection
In Windows File Protection, the operating system prevents system DLLs from being updated or deleted by an unauthorized agent. Therefore, when a program installation tries to remove or update a DLL that is defined as a system DLL, Windows File Protection will look for a valid digital signature.
Private DLLs
Private DLLs let you isolate a program from changes that are made to shared DLLs. Private DLLs use version-specific information or an empty .local file to enforce the version of the DLL that is used by the program. To use private DLLs, locate your DLLs in the program root folder. Then, for new programs, add version-specific information to the DLL. For old programs, use an empty .local file. Each method tells the operating system to use the private DLLs that are located in the program root folder.

DLL dependencies

When a program or a DLL uses a DLL function in another DLL, a dependency is created. Therefore, the program is no longer self-contained, and the program may experience problems if the dependency is broken. For example, the program may not run if one of the following actions occurs:
A dependent DLL is upgraded to a new version.
A dependent DLL is fixed.
A dependent DLL is overwritten with an earlier version.
A dependent DLL is removed from the computer.
These actions are generally known as DLL conflicts. If backward compatibility is not enforced, the program may not successfully run.

The following list describes the changes that have been introduced in Microsoft Windows 2000 and in later Windows operating systems to help minimize dependency issues:
Windows File Protection
In Windows File Protection, the operating system prevents system DLLs from being updated or deleted by an unauthorized agent. Therefore, when a program installation tries to remove or update a DLL that is defined as a system DLL, Windows File Protection will look for a valid digital signature.
Private DLLs
Private DLLs let you isolate a program from changes that are made to shared DLLs. Private DLLs use version-specific information or an empty .local file to enforce the version of the DLL that is used by the program. To use private DLLs, locate your DLLs in the program root folder. Then, for new programs, add version-specific information to the DLL. For old programs, use an empty .local file. Each method tells the operating system to use the private DLLs that are located in the program root folder.

DLL development

This section describes the issues and the requirements that you should consider when you develop your own DLLs.
Types of DLLs

When you load a DLL in an application, two methods of linking let you call the exported DLL functions. The two methods of linking are load-time dynamic linking and run-time dynamic linking.
Load-time dynamic linking
In load-time dynamic linking, an application makes explicit calls to exported DLL functions like local functions. To use load-time dynamic linking, provide a header (.h) file and an import library (.lib) file when you compile and link the application. When you do this, the linker will provide the system with the information that is required to load the DLL and resolve the exported DLL function locations at load time.
Run-time dynamic linking
In run-time dynamic linking, an application calls either the LoadLibrary function or the LoadLibraryEx function to load the DLL at run time. After the DLL is successfully loaded, you use the GetProcAddress function to obtain the address of the exported DLL function that you want to call. When you use run-time dynamic linking, you do not need an import library file.

The following list describes the application criteria for when to use load-time dynamic linking and when to use run-time dynamic linking:
Startup performance
If the initial startup performance of the application is important, you should use run-time dynamic linking.
Ease of use
In load-time dynamic linking, the exported DLL functions are like local functions. This makes it easy for you to call these functions.
Application logic
In run-time dynamic linking, an application can branch to load different modules as required. This is important when you develop multiple-language versions.
The DLL entry point

When you create a DLL, you can optionally specify an entry point function. The entry point function is called when processes or threads attach themselves to the DLL or detached themselves from the DLL. You can use the entry point function to initialize data structures or to destroy data structures as required by the DLL. Additionally, if the application is multithreaded, you can use thread local storage (TLS) to allocate memory that is private to each thread in the entry point function. The following code is an example of the DLL entry point function.
BOOL APIENTRY DllMain(
HANDLE hModule, // Handle to DLL module
DWORD ul_reason_for_call, // Reason for calling function
LPVOID lpReserved ) // Reserved

switch ( ul_reason_for_call )

case DLL_PROCESS_ATTACHED:
// A process is loading the DLL.
break;
case DLL_THREAD_ATTACHED:
// A process is creating a new thread.
break;
case DLL_THREAD_DETACH:
// A thread exits normally.
break;
case DLL_PROCESS_DETACH:
// A process unloads the DLL.
break;

return TRUE;

When the entry point function returns a FALSE value, the application will not start if you are using load-time dynamic linking. If you are using run-time dynamic linking, only the individual DLL will not load.

The entry point function should only perform simple initialization tasks and should not call any other DLL loading or termination functions. For example, in the entry point function, you should not directly or indirectly call the LoadLibrary function or the LoadLibraryEx function. Additionally, you should not call the FreeLibrary function when the process is terminating.

Note In multithreaded applications, make sure that access to the DLL global data is synchronized (thread safe) to avoid possible data corruption. To do this, use TLS to provide unique data for each thread.
Exporting DLL functions

How to Fix AMSTERDAM_070.WAV

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To export DLL functions, you can either add a function keyword to the exported DLL functions or create a module definition (.def) file that lists the exported DLL functions.

To use a function keyword, you must declare each function that you want to export with the following keyword:
__declspec(dllexport)
To use exported DLL functions in the application, you must declare each function that you want to import with the following keyword:
__declspec(dllimport)
Typically, you would use one header file that has a define statement and an ifdef statement to separate the export statement and the import statement.

You can also use a module definition file to declare exported DLL functions. When you use a module definition file, you do not have to add the function keyword to the exported DLL functions. In the module definition file, you declare the LIBRARY statement and the EXPORTS statement for the DLL. The following code is an example of a definition file.
// SampleDLL.def
//
LIBRARY “sampleDLL”

EXPORTS
HelloWorld
Sample DLL and application

In Microsoft Visual C++ 6.0, you can create a DLL by selecting either the Win32 Dynamic-Link Library project type or the MFC AppWizard (dll) project type.

The following code is an example of a DLL that was created in Visual C++ by using the Win32 Dynamic-Link Library project type.
// SampleDLL.cpp
//

#include “stdafx.h”
#define EXPORTING_DLL
#include “sampleDLL.h”

BOOL APIENTRY DllMain( HANDLE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved
)

return TRUE;

void HelloWorld()

MessageBox( NULL, TEXT(“Hello World”), TEXT(“In a DLL”), MB_OK);

// File: SampleDLL.h
//
#ifndef INDLL_H
#define INDLL_H

#ifdef EXPORTING_DLL
extern __declspec(dllexport) void HelloWorld() ;
#else
extern __declspec(dllimport) void HelloWorld() ;
#endif

#endif
The following code is an example of a Win32 Application project that calls the exported DLL function in the SampleDLL DLL.
// SampleApp.cpp
//

#include “stdafx.h”
#include “sampleDLL.h”

int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)

HelloWorld();
return 0;

Note In load-time dynamic linking, you must link the SampleDLL.lib import library that is created when you build the SampleDLL project.

In run-time dynamic linking, you use code that is similar to the following code to call the SampleDLL.dll exported DLL function.

typedef VOID (*DLLPROC) (LPTSTR);

HINSTANCE hinstDLL;
DLLPROC HelloWorld;
BOOL fFreeDLL;

hinstDLL = LoadLibrary(“sampleDLL.dll”);
if (hinstDLL != NULL)

HelloWorld = (DLLPROC) GetProcAddress(hinstDLL, “HelloWorld”);
if (HelloWorld != NULL)
(HelloWorld);

fFreeDLL = FreeLibrary(hinstDLL);


When you compile and link the SampleDLL application, the Windows operating system searches for the SampleDLL DLL in the following locations in this order:
The application folder
The current folder
The Windows system folder

Note The Get System Directory function returns the path of the Windows system folder.
The Windows folder

Note The Get Windows Directory function returns the path of the Windows folder.
The .NET Framework assembly

With the introduction of Microsoft .NET and the .NET Framework, most of the problems that are associated with DLLs have been eliminated by using assemblies. An assembly is a logical unit of functionality that runs under the control of the .NET common language runtime (CLR). An assembly physically exists as a .dll file or as an .exe file. However, internally an assembly is very different from a Microsoft Win32 DLL.

To create a shared assembly requires that you assign a strong name to the assembly and then publish the assembly in the global assembly cache.

This feature helps you create zero-impact installations.

NET 2002 Enterprise Developer
Microsoft Visual Studio .

Download Windows AMSTERDAM_070.WAV Diagnostics Tool


  • -

AMSTERDAM_069.WAV

Category : Microsoft DLL

Microsoft Solutions for AMSTERDAM_069.WAV

Notice: Windows Error AMSTERDAM_069.WAV happens when your operating system becomes misconfigured, important system files go missing or get damaged. This is a common problem with computers that don’t get maintained regularly. Eventually the system becomes overloaded with problems and begins to crash and display errors.

Recommended Solution: We recommend you download our repair tool. It is designed to diagnose problems on your computer and fix them in just a few minutes with only a few mouse clicks.

Download Microsoft Windows Error Repair Tool

File Size: 6.7 MB
Compatible: Microsoft Windows XP/Vista/7/8/10 (32/64-BIT)
Instructions to diagnose and fix Windows Errors problems:

Please follow the following 3 steps to diagnose and fix your problem:

STEP 1: Download Windows AMSTERDAM_069.WAV Diagnostics Tool

STEP 2: Click Scan to Find The Issue.

STEP 3: Click Fix Errors to Repair Error.

Note: With all the new additional features now included in the repair tool, you will be able to optimize your system to run even faster and stable. It’s not unusual to see an increase of 95%+ in performance.

Operating System Compatibility:Windows XP/Vista/7/8/10 (32/64BIT)
Download Size: 6.7 MB
Version 2015
Expert Support: Yes

For the Microsoft Windows operating systems that are listed in the “Applies to” section, much of the functionality of the operating system is provided by dynamic link libraries (DLL). Additionally, when you run a program on one of these Windows operating systems, much of the functionality of the program may be provided by DLLs. For example, some programs may contain many different modules, and each module of the program is contained and distributed in DLLs.

The use of DLLs helps promote modularization of code, code reuse, efficient memory usage, and reduced disk space. Therefore, the operating system and the programs load faster, run faster, and take less disk space on the computer.

When a program uses a DLL, an issue that is called dependency may cause the program not to run. When a program uses a DLL, a dependency is created. If another program overwrites and breaks this dependency, the original program may not successfully run.

With the introduction of the Microsoft .NET Framework, most dependency problems have been eliminated by using assemblies.
What is a DLL?

A DLL is a library that contains code and data that can be used by more than one program at the same time. For example, in Windows operating systems, the Comdlg32 DLL performs common dialog box related functions. Therefore, each program can use the functionality that is contained in this DLL to implement an Open dialog box. This helps promote code reuse and efficient memory usage.

By using a DLL, a program can be modularized into separate components. For example, an accounting program may be sold by module. Each module can be loaded into the main program at run time if that module is installed. Because the modules are separate, the load time of the program is faster, and a module is only loaded when that functionality is requested.

Download Windows AMSTERDAM_069.WAV Diagnostics Tool

Additionally, updates are easier to apply to each module without affecting other parts of the program. For example, you may have a payroll program, and the tax rates change each year. When these changes are isolated to a DLL, you can apply an update without needing to build or install the whole program again.

The following list describes some of the files that are implemented as DLLs in Windows operating systems:
ActiveX Controls (.ocx) files
An example of an ActiveX control is a calendar control that lets you select a date from a calendar.
Control Panel (.cpl) files
An example of a .cpl file is an item that is located in Control Panel. Each item is a specialized DLL.
Device driver (.drv) files
An example of a device driver is a printer driver that controls the printing to a printer.
DLL advantages

The following list describes some of the advantages that are provided when a program uses a DLL:
Uses fewer resources
When multiple programs use the same library of functions, a DLL can reduce the duplication of code that is loaded on the disk and in physical memory. This can greatly influence the performance of not just the program that is running in the foreground, but also other programs that are running on the Windows operating system.
Promotes modular architecture
A DLL helps promote developing modular programs. This helps you develop large programs that require multiple language versions or a program that requires modular architecture. An example of a modular program is an accounting program that has many modules that can be dynamically loaded at run time.
Eases deployment and installation
When a function within a DLL needs an update or a fix, the deployment and installation of the DLL does not require the program to be relinked with the DLL. Additionally, if multiple programs use the same DLL, the multiple programs will all benefit from the update or the fix. This issue may more frequently occur when you use a third-party DLL that is regularly updated or fixed.
DLL dependencies

When a program or a DLL uses a DLL function in another DLL, a dependency is created. Therefore, the program is no longer self-contained, and the program may experience problems if the dependency is broken. For example, the program may not run if one of the following actions occurs:
A dependent DLL is upgraded to a new version.
A dependent DLL is fixed.
A dependent DLL is overwritten with an earlier version.
A dependent DLL is removed from the computer.
These actions are generally known as DLL conflicts. If backward compatibility is not enforced, the program may not successfully run.

The following list describes the changes that have been introduced in Microsoft Windows 2000 and in later Windows operating systems to help minimize dependency issues:
Windows File Protection
In Windows File Protection, the operating system prevents system DLLs from being updated or deleted by an unauthorized agent. Therefore, when a program installation tries to remove or update a DLL that is defined as a system DLL, Windows File Protection will look for a valid digital signature.
Private DLLs
Private DLLs let you isolate a program from changes that are made to shared DLLs. Private DLLs use version-specific information or an empty .local file to enforce the version of the DLL that is used by the program. To use private DLLs, locate your DLLs in the program root folder. Then, for new programs, add version-specific information to the DLL. For old programs, use an empty .local file. Each method tells the operating system to use the private DLLs that are located in the program root folder.

DLL dependencies

When a program or a DLL uses a DLL function in another DLL, a dependency is created. Therefore, the program is no longer self-contained, and the program may experience problems if the dependency is broken. For example, the program may not run if one of the following actions occurs:
A dependent DLL is upgraded to a new version.
A dependent DLL is fixed.
A dependent DLL is overwritten with an earlier version.
A dependent DLL is removed from the computer.
These actions are generally known as DLL conflicts. If backward compatibility is not enforced, the program may not successfully run.

The following list describes the changes that have been introduced in Microsoft Windows 2000 and in later Windows operating systems to help minimize dependency issues:
Windows File Protection
In Windows File Protection, the operating system prevents system DLLs from being updated or deleted by an unauthorized agent. Therefore, when a program installation tries to remove or update a DLL that is defined as a system DLL, Windows File Protection will look for a valid digital signature.
Private DLLs
Private DLLs let you isolate a program from changes that are made to shared DLLs. Private DLLs use version-specific information or an empty .local file to enforce the version of the DLL that is used by the program. To use private DLLs, locate your DLLs in the program root folder. Then, for new programs, add version-specific information to the DLL. For old programs, use an empty .local file. Each method tells the operating system to use the private DLLs that are located in the program root folder.

DLL development

This section describes the issues and the requirements that you should consider when you develop your own DLLs.
Types of DLLs

When you load a DLL in an application, two methods of linking let you call the exported DLL functions. The two methods of linking are load-time dynamic linking and run-time dynamic linking.
Load-time dynamic linking
In load-time dynamic linking, an application makes explicit calls to exported DLL functions like local functions. To use load-time dynamic linking, provide a header (.h) file and an import library (.lib) file when you compile and link the application. When you do this, the linker will provide the system with the information that is required to load the DLL and resolve the exported DLL function locations at load time.
Run-time dynamic linking
In run-time dynamic linking, an application calls either the LoadLibrary function or the LoadLibraryEx function to load the DLL at run time. After the DLL is successfully loaded, you use the GetProcAddress function to obtain the address of the exported DLL function that you want to call. When you use run-time dynamic linking, you do not need an import library file.

The following list describes the application criteria for when to use load-time dynamic linking and when to use run-time dynamic linking:
Startup performance
If the initial startup performance of the application is important, you should use run-time dynamic linking.
Ease of use
In load-time dynamic linking, the exported DLL functions are like local functions. This makes it easy for you to call these functions.
Application logic
In run-time dynamic linking, an application can branch to load different modules as required. This is important when you develop multiple-language versions.
The DLL entry point

When you create a DLL, you can optionally specify an entry point function. The entry point function is called when processes or threads attach themselves to the DLL or detached themselves from the DLL. You can use the entry point function to initialize data structures or to destroy data structures as required by the DLL. Additionally, if the application is multithreaded, you can use thread local storage (TLS) to allocate memory that is private to each thread in the entry point function. The following code is an example of the DLL entry point function.
BOOL APIENTRY DllMain(
HANDLE hModule, // Handle to DLL module
DWORD ul_reason_for_call, // Reason for calling function
LPVOID lpReserved ) // Reserved

switch ( ul_reason_for_call )

case DLL_PROCESS_ATTACHED:
// A process is loading the DLL.
break;
case DLL_THREAD_ATTACHED:
// A process is creating a new thread.
break;
case DLL_THREAD_DETACH:
// A thread exits normally.
break;
case DLL_PROCESS_DETACH:
// A process unloads the DLL.
break;

return TRUE;

When the entry point function returns a FALSE value, the application will not start if you are using load-time dynamic linking. If you are using run-time dynamic linking, only the individual DLL will not load.

The entry point function should only perform simple initialization tasks and should not call any other DLL loading or termination functions. For example, in the entry point function, you should not directly or indirectly call the LoadLibrary function or the LoadLibraryEx function. Additionally, you should not call the FreeLibrary function when the process is terminating.

Note In multithreaded applications, make sure that access to the DLL global data is synchronized (thread safe) to avoid possible data corruption. To do this, use TLS to provide unique data for each thread.
Exporting DLL functions

How to Fix AMSTERDAM_069.WAV

Download Windows AMSTERDAM_069.WAV Diagnostics Tool

To export DLL functions, you can either add a function keyword to the exported DLL functions or create a module definition (.def) file that lists the exported DLL functions.

To use a function keyword, you must declare each function that you want to export with the following keyword:
__declspec(dllexport)
To use exported DLL functions in the application, you must declare each function that you want to import with the following keyword:
__declspec(dllimport)
Typically, you would use one header file that has a define statement and an ifdef statement to separate the export statement and the import statement.

You can also use a module definition file to declare exported DLL functions. When you use a module definition file, you do not have to add the function keyword to the exported DLL functions. In the module definition file, you declare the LIBRARY statement and the EXPORTS statement for the DLL. The following code is an example of a definition file.
// SampleDLL.def
//
LIBRARY “sampleDLL”

EXPORTS
HelloWorld
Sample DLL and application

In Microsoft Visual C++ 6.0, you can create a DLL by selecting either the Win32 Dynamic-Link Library project type or the MFC AppWizard (dll) project type.

The following code is an example of a DLL that was created in Visual C++ by using the Win32 Dynamic-Link Library project type.
// SampleDLL.cpp
//

#include “stdafx.h”
#define EXPORTING_DLL
#include “sampleDLL.h”

BOOL APIENTRY DllMain( HANDLE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved
)

return TRUE;

void HelloWorld()

MessageBox( NULL, TEXT(“Hello World”), TEXT(“In a DLL”), MB_OK);

// File: SampleDLL.h
//
#ifndef INDLL_H
#define INDLL_H

#ifdef EXPORTING_DLL
extern __declspec(dllexport) void HelloWorld() ;
#else
extern __declspec(dllimport) void HelloWorld() ;
#endif

#endif
The following code is an example of a Win32 Application project that calls the exported DLL function in the SampleDLL DLL.
// SampleApp.cpp
//

#include “stdafx.h”
#include “sampleDLL.h”

int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)

HelloWorld();
return 0;

Note In load-time dynamic linking, you must link the SampleDLL.lib import library that is created when you build the SampleDLL project.

In run-time dynamic linking, you use code that is similar to the following code to call the SampleDLL.dll exported DLL function.

typedef VOID (*DLLPROC) (LPTSTR);

HINSTANCE hinstDLL;
DLLPROC HelloWorld;
BOOL fFreeDLL;

hinstDLL = LoadLibrary(“sampleDLL.dll”);
if (hinstDLL != NULL)

HelloWorld = (DLLPROC) GetProcAddress(hinstDLL, “HelloWorld”);
if (HelloWorld != NULL)
(HelloWorld);

fFreeDLL = FreeLibrary(hinstDLL);


When you compile and link the SampleDLL application, the Windows operating system searches for the SampleDLL DLL in the following locations in this order:
The application folder
The current folder
The Windows system folder

Note The Get System Directory function returns the path of the Windows system folder.
The Windows folder

Note The Get Windows Directory function returns the path of the Windows folder.
The .NET Framework assembly

With the introduction of Microsoft .NET and the .NET Framework, most of the problems that are associated with DLLs have been eliminated by using assemblies. An assembly is a logical unit of functionality that runs under the control of the .NET common language runtime (CLR). An assembly physically exists as a .dll file or as an .exe file. However, internally an assembly is very different from a Microsoft Win32 DLL.

To create a shared assembly requires that you assign a strong name to the assembly and then publish the assembly in the global assembly cache.

One application can use one version of an assembly, and another application can use a different version of an assembly.

NET 2003 Enterprise Architect
Microsoft Visual Studio .

Download Windows AMSTERDAM_069.WAV Diagnostics Tool


  • -

AMSTERDAM_068.WAV

Category : Microsoft DLL

Microsoft Solutions for AMSTERDAM_068.WAV

Notice: Windows Error AMSTERDAM_068.WAV happens when your operating system becomes misconfigured, important system files go missing or get damaged. This is a common problem with computers that don’t get maintained regularly. Eventually the system becomes overloaded with problems and begins to crash and display errors.

Recommended Solution: We recommend you download our repair tool. It is designed to diagnose problems on your computer and fix them in just a few minutes with only a few mouse clicks.

Download Microsoft Windows Error Repair Tool

File Size: 6.7 MB
Compatible: Microsoft Windows XP/Vista/7/8/10 (32/64-BIT)
Instructions to diagnose and fix Windows Errors problems:

Please follow the following 3 steps to diagnose and fix your problem:

STEP 1: Download Windows AMSTERDAM_068.WAV Diagnostics Tool

STEP 2: Click Scan to Find The Issue.

STEP 3: Click Fix Errors to Repair Error.

Note: With all the new additional features now included in the repair tool, you will be able to optimize your system to run even faster and stable. It’s not unusual to see an increase of 95%+ in performance.

Operating System Compatibility:Windows XP/Vista/7/8/10 (32/64BIT)
Download Size: 6.7 MB
Version 2015
Expert Support: Yes

For the Microsoft Windows operating systems that are listed in the “Applies to” section, much of the functionality of the operating system is provided by dynamic link libraries (DLL). Additionally, when you run a program on one of these Windows operating systems, much of the functionality of the program may be provided by DLLs. For example, some programs may contain many different modules, and each module of the program is contained and distributed in DLLs.

The use of DLLs helps promote modularization of code, code reuse, efficient memory usage, and reduced disk space. Therefore, the operating system and the programs load faster, run faster, and take less disk space on the computer.

When a program uses a DLL, an issue that is called dependency may cause the program not to run. When a program uses a DLL, a dependency is created. If another program overwrites and breaks this dependency, the original program may not successfully run.

With the introduction of the Microsoft .NET Framework, most dependency problems have been eliminated by using assemblies.
What is a DLL?

A DLL is a library that contains code and data that can be used by more than one program at the same time. For example, in Windows operating systems, the Comdlg32 DLL performs common dialog box related functions. Therefore, each program can use the functionality that is contained in this DLL to implement an Open dialog box. This helps promote code reuse and efficient memory usage.

By using a DLL, a program can be modularized into separate components. For example, an accounting program may be sold by module. Each module can be loaded into the main program at run time if that module is installed. Because the modules are separate, the load time of the program is faster, and a module is only loaded when that functionality is requested.

Download Windows AMSTERDAM_068.WAV Diagnostics Tool

Additionally, updates are easier to apply to each module without affecting other parts of the program. For example, you may have a payroll program, and the tax rates change each year. When these changes are isolated to a DLL, you can apply an update without needing to build or install the whole program again.

The following list describes some of the files that are implemented as DLLs in Windows operating systems:
ActiveX Controls (.ocx) files
An example of an ActiveX control is a calendar control that lets you select a date from a calendar.
Control Panel (.cpl) files
An example of a .cpl file is an item that is located in Control Panel. Each item is a specialized DLL.
Device driver (.drv) files
An example of a device driver is a printer driver that controls the printing to a printer.
DLL advantages

The following list describes some of the advantages that are provided when a program uses a DLL:
Uses fewer resources
When multiple programs use the same library of functions, a DLL can reduce the duplication of code that is loaded on the disk and in physical memory. This can greatly influence the performance of not just the program that is running in the foreground, but also other programs that are running on the Windows operating system.
Promotes modular architecture
A DLL helps promote developing modular programs. This helps you develop large programs that require multiple language versions or a program that requires modular architecture. An example of a modular program is an accounting program that has many modules that can be dynamically loaded at run time.
Eases deployment and installation
When a function within a DLL needs an update or a fix, the deployment and installation of the DLL does not require the program to be relinked with the DLL. Additionally, if multiple programs use the same DLL, the multiple programs will all benefit from the update or the fix. This issue may more frequently occur when you use a third-party DLL that is regularly updated or fixed.
DLL dependencies

When a program or a DLL uses a DLL function in another DLL, a dependency is created. Therefore, the program is no longer self-contained, and the program may experience problems if the dependency is broken. For example, the program may not run if one of the following actions occurs:
A dependent DLL is upgraded to a new version.
A dependent DLL is fixed.
A dependent DLL is overwritten with an earlier version.
A dependent DLL is removed from the computer.
These actions are generally known as DLL conflicts. If backward compatibility is not enforced, the program may not successfully run.

The following list describes the changes that have been introduced in Microsoft Windows 2000 and in later Windows operating systems to help minimize dependency issues:
Windows File Protection
In Windows File Protection, the operating system prevents system DLLs from being updated or deleted by an unauthorized agent. Therefore, when a program installation tries to remove or update a DLL that is defined as a system DLL, Windows File Protection will look for a valid digital signature.
Private DLLs
Private DLLs let you isolate a program from changes that are made to shared DLLs. Private DLLs use version-specific information or an empty .local file to enforce the version of the DLL that is used by the program. To use private DLLs, locate your DLLs in the program root folder. Then, for new programs, add version-specific information to the DLL. For old programs, use an empty .local file. Each method tells the operating system to use the private DLLs that are located in the program root folder.

DLL dependencies

When a program or a DLL uses a DLL function in another DLL, a dependency is created. Therefore, the program is no longer self-contained, and the program may experience problems if the dependency is broken. For example, the program may not run if one of the following actions occurs:
A dependent DLL is upgraded to a new version.
A dependent DLL is fixed.
A dependent DLL is overwritten with an earlier version.
A dependent DLL is removed from the computer.
These actions are generally known as DLL conflicts. If backward compatibility is not enforced, the program may not successfully run.

The following list describes the changes that have been introduced in Microsoft Windows 2000 and in later Windows operating systems to help minimize dependency issues:
Windows File Protection
In Windows File Protection, the operating system prevents system DLLs from being updated or deleted by an unauthorized agent. Therefore, when a program installation tries to remove or update a DLL that is defined as a system DLL, Windows File Protection will look for a valid digital signature.
Private DLLs
Private DLLs let you isolate a program from changes that are made to shared DLLs. Private DLLs use version-specific information or an empty .local file to enforce the version of the DLL that is used by the program. To use private DLLs, locate your DLLs in the program root folder. Then, for new programs, add version-specific information to the DLL. For old programs, use an empty .local file. Each method tells the operating system to use the private DLLs that are located in the program root folder.

DLL development

This section describes the issues and the requirements that you should consider when you develop your own DLLs.
Types of DLLs

When you load a DLL in an application, two methods of linking let you call the exported DLL functions. The two methods of linking are load-time dynamic linking and run-time dynamic linking.
Load-time dynamic linking
In load-time dynamic linking, an application makes explicit calls to exported DLL functions like local functions. To use load-time dynamic linking, provide a header (.h) file and an import library (.lib) file when you compile and link the application. When you do this, the linker will provide the system with the information that is required to load the DLL and resolve the exported DLL function locations at load time.
Run-time dynamic linking
In run-time dynamic linking, an application calls either the LoadLibrary function or the LoadLibraryEx function to load the DLL at run time. After the DLL is successfully loaded, you use the GetProcAddress function to obtain the address of the exported DLL function that you want to call. When you use run-time dynamic linking, you do not need an import library file.

The following list describes the application criteria for when to use load-time dynamic linking and when to use run-time dynamic linking:
Startup performance
If the initial startup performance of the application is important, you should use run-time dynamic linking.
Ease of use
In load-time dynamic linking, the exported DLL functions are like local functions. This makes it easy for you to call these functions.
Application logic
In run-time dynamic linking, an application can branch to load different modules as required. This is important when you develop multiple-language versions.
The DLL entry point

When you create a DLL, you can optionally specify an entry point function. The entry point function is called when processes or threads attach themselves to the DLL or detached themselves from the DLL. You can use the entry point function to initialize data structures or to destroy data structures as required by the DLL. Additionally, if the application is multithreaded, you can use thread local storage (TLS) to allocate memory that is private to each thread in the entry point function. The following code is an example of the DLL entry point function.
BOOL APIENTRY DllMain(
HANDLE hModule, // Handle to DLL module
DWORD ul_reason_for_call, // Reason for calling function
LPVOID lpReserved ) // Reserved

switch ( ul_reason_for_call )

case DLL_PROCESS_ATTACHED:
// A process is loading the DLL.
break;
case DLL_THREAD_ATTACHED:
// A process is creating a new thread.
break;
case DLL_THREAD_DETACH:
// A thread exits normally.
break;
case DLL_PROCESS_DETACH:
// A process unloads the DLL.
break;

return TRUE;

When the entry point function returns a FALSE value, the application will not start if you are using load-time dynamic linking. If you are using run-time dynamic linking, only the individual DLL will not load.

The entry point function should only perform simple initialization tasks and should not call any other DLL loading or termination functions. For example, in the entry point function, you should not directly or indirectly call the LoadLibrary function or the LoadLibraryEx function. Additionally, you should not call the FreeLibrary function when the process is terminating.

Note In multithreaded applications, make sure that access to the DLL global data is synchronized (thread safe) to avoid possible data corruption. To do this, use TLS to provide unique data for each thread.
Exporting DLL functions

How to Fix AMSTERDAM_068.WAV

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To export DLL functions, you can either add a function keyword to the exported DLL functions or create a module definition (.def) file that lists the exported DLL functions.

To use a function keyword, you must declare each function that you want to export with the following keyword:
__declspec(dllexport)
To use exported DLL functions in the application, you must declare each function that you want to import with the following keyword:
__declspec(dllimport)
Typically, you would use one header file that has a define statement and an ifdef statement to separate the export statement and the import statement.

You can also use a module definition file to declare exported DLL functions. When you use a module definition file, you do not have to add the function keyword to the exported DLL functions. In the module definition file, you declare the LIBRARY statement and the EXPORTS statement for the DLL. The following code is an example of a definition file.
// SampleDLL.def
//
LIBRARY “sampleDLL”

EXPORTS
HelloWorld
Sample DLL and application

In Microsoft Visual C++ 6.0, you can create a DLL by selecting either the Win32 Dynamic-Link Library project type or the MFC AppWizard (dll) project type.

The following code is an example of a DLL that was created in Visual C++ by using the Win32 Dynamic-Link Library project type.
// SampleDLL.cpp
//

#include “stdafx.h”
#define EXPORTING_DLL
#include “sampleDLL.h”

BOOL APIENTRY DllMain( HANDLE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved
)

return TRUE;

void HelloWorld()

MessageBox( NULL, TEXT(“Hello World”), TEXT(“In a DLL”), MB_OK);

// File: SampleDLL.h
//
#ifndef INDLL_H
#define INDLL_H

#ifdef EXPORTING_DLL
extern __declspec(dllexport) void HelloWorld() ;
#else
extern __declspec(dllimport) void HelloWorld() ;
#endif

#endif
The following code is an example of a Win32 Application project that calls the exported DLL function in the SampleDLL DLL.
// SampleApp.cpp
//

#include “stdafx.h”
#include “sampleDLL.h”

int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)

HelloWorld();
return 0;

Note In load-time dynamic linking, you must link the SampleDLL.lib import library that is created when you build the SampleDLL project.

In run-time dynamic linking, you use code that is similar to the following code to call the SampleDLL.dll exported DLL function.

typedef VOID (*DLLPROC) (LPTSTR);

HINSTANCE hinstDLL;
DLLPROC HelloWorld;
BOOL fFreeDLL;

hinstDLL = LoadLibrary(“sampleDLL.dll”);
if (hinstDLL != NULL)

HelloWorld = (DLLPROC) GetProcAddress(hinstDLL, “HelloWorld”);
if (HelloWorld != NULL)
(HelloWorld);

fFreeDLL = FreeLibrary(hinstDLL);


When you compile and link the SampleDLL application, the Windows operating system searches for the SampleDLL DLL in the following locations in this order:
The application folder
The current folder
The Windows system folder

Note The Get System Directory function returns the path of the Windows system folder.
The Windows folder

Note The Get Windows Directory function returns the path of the Windows folder.
The .NET Framework assembly

With the introduction of Microsoft .NET and the .NET Framework, most of the problems that are associated with DLLs have been eliminated by using assemblies. An assembly is a logical unit of functionality that runs under the control of the .NET common language runtime (CLR). An assembly physically exists as a .dll file or as an .exe file. However, internally an assembly is very different from a Microsoft Win32 DLL.

By default, when you create an assembly, the assembly is private to the application.

Language independent
An assembly can be developed by using any one of the supported .

0 Enterprise Edition
Microsoft Visual Studio 2005 Express Edition
Microsoft Visual Studio 2005 Professional Edition
Microsoft Visual Studio 2005 Standard Edition
Microsoft Office XP Professional Edition
Microsoft Office XP Small Business Edition
Microsoft Office XP Standard Edition
Microsoft Office Home Edition 2003
Microsoft Office Professional Edition 2003
Microsoft Office Small Business Edition 2003
Microsoft Office Standard Edition 2003

Download Windows AMSTERDAM_068.WAV Diagnostics Tool


  • -

AMSTERDAM_067.WAV

Category : Microsoft DLL

Microsoft Solutions for AMSTERDAM_067.WAV

Notice: Windows Error AMSTERDAM_067.WAV happens when your operating system becomes misconfigured, important system files go missing or get damaged. This is a common problem with computers that don’t get maintained regularly. Eventually the system becomes overloaded with problems and begins to crash and display errors.

Recommended Solution: We recommend you download our repair tool. It is designed to diagnose problems on your computer and fix them in just a few minutes with only a few mouse clicks.

Download Microsoft Windows Error Repair Tool

File Size: 6.7 MB
Compatible: Microsoft Windows XP/Vista/7/8/10 (32/64-BIT)
Instructions to diagnose and fix Windows Errors problems:

Please follow the following 3 steps to diagnose and fix your problem:

STEP 1: Download Windows AMSTERDAM_067.WAV Diagnostics Tool

STEP 2: Click Scan to Find The Issue.

STEP 3: Click Fix Errors to Repair Error.

Note: With all the new additional features now included in the repair tool, you will be able to optimize your system to run even faster and stable. It’s not unusual to see an increase of 95%+ in performance.

Operating System Compatibility:Windows XP/Vista/7/8/10 (32/64BIT)
Download Size: 6.7 MB
Version 2015
Expert Support: Yes

For the Microsoft Windows operating systems that are listed in the “Applies to” section, much of the functionality of the operating system is provided by dynamic link libraries (DLL). Additionally, when you run a program on one of these Windows operating systems, much of the functionality of the program may be provided by DLLs. For example, some programs may contain many different modules, and each module of the program is contained and distributed in DLLs.

The use of DLLs helps promote modularization of code, code reuse, efficient memory usage, and reduced disk space. Therefore, the operating system and the programs load faster, run faster, and take less disk space on the computer.

When a program uses a DLL, an issue that is called dependency may cause the program not to run. When a program uses a DLL, a dependency is created. If another program overwrites and breaks this dependency, the original program may not successfully run.

With the introduction of the Microsoft .NET Framework, most dependency problems have been eliminated by using assemblies.
What is a DLL?

A DLL is a library that contains code and data that can be used by more than one program at the same time. For example, in Windows operating systems, the Comdlg32 DLL performs common dialog box related functions. Therefore, each program can use the functionality that is contained in this DLL to implement an Open dialog box. This helps promote code reuse and efficient memory usage.

By using a DLL, a program can be modularized into separate components. For example, an accounting program may be sold by module. Each module can be loaded into the main program at run time if that module is installed. Because the modules are separate, the load time of the program is faster, and a module is only loaded when that functionality is requested.

Download Windows AMSTERDAM_067.WAV Diagnostics Tool

Additionally, updates are easier to apply to each module without affecting other parts of the program. For example, you may have a payroll program, and the tax rates change each year. When these changes are isolated to a DLL, you can apply an update without needing to build or install the whole program again.

The following list describes some of the files that are implemented as DLLs in Windows operating systems:
ActiveX Controls (.ocx) files
An example of an ActiveX control is a calendar control that lets you select a date from a calendar.
Control Panel (.cpl) files
An example of a .cpl file is an item that is located in Control Panel. Each item is a specialized DLL.
Device driver (.drv) files
An example of a device driver is a printer driver that controls the printing to a printer.
DLL advantages

The following list describes some of the advantages that are provided when a program uses a DLL:
Uses fewer resources
When multiple programs use the same library of functions, a DLL can reduce the duplication of code that is loaded on the disk and in physical memory. This can greatly influence the performance of not just the program that is running in the foreground, but also other programs that are running on the Windows operating system.
Promotes modular architecture
A DLL helps promote developing modular programs. This helps you develop large programs that require multiple language versions or a program that requires modular architecture. An example of a modular program is an accounting program that has many modules that can be dynamically loaded at run time.
Eases deployment and installation
When a function within a DLL needs an update or a fix, the deployment and installation of the DLL does not require the program to be relinked with the DLL. Additionally, if multiple programs use the same DLL, the multiple programs will all benefit from the update or the fix. This issue may more frequently occur when you use a third-party DLL that is regularly updated or fixed.
DLL dependencies

When a program or a DLL uses a DLL function in another DLL, a dependency is created. Therefore, the program is no longer self-contained, and the program may experience problems if the dependency is broken. For example, the program may not run if one of the following actions occurs:
A dependent DLL is upgraded to a new version.
A dependent DLL is fixed.
A dependent DLL is overwritten with an earlier version.
A dependent DLL is removed from the computer.
These actions are generally known as DLL conflicts. If backward compatibility is not enforced, the program may not successfully run.

The following list describes the changes that have been introduced in Microsoft Windows 2000 and in later Windows operating systems to help minimize dependency issues:
Windows File Protection
In Windows File Protection, the operating system prevents system DLLs from being updated or deleted by an unauthorized agent. Therefore, when a program installation tries to remove or update a DLL that is defined as a system DLL, Windows File Protection will look for a valid digital signature.
Private DLLs
Private DLLs let you isolate a program from changes that are made to shared DLLs. Private DLLs use version-specific information or an empty .local file to enforce the version of the DLL that is used by the program. To use private DLLs, locate your DLLs in the program root folder. Then, for new programs, add version-specific information to the DLL. For old programs, use an empty .local file. Each method tells the operating system to use the private DLLs that are located in the program root folder.

DLL dependencies

When a program or a DLL uses a DLL function in another DLL, a dependency is created. Therefore, the program is no longer self-contained, and the program may experience problems if the dependency is broken. For example, the program may not run if one of the following actions occurs:
A dependent DLL is upgraded to a new version.
A dependent DLL is fixed.
A dependent DLL is overwritten with an earlier version.
A dependent DLL is removed from the computer.
These actions are generally known as DLL conflicts. If backward compatibility is not enforced, the program may not successfully run.

The following list describes the changes that have been introduced in Microsoft Windows 2000 and in later Windows operating systems to help minimize dependency issues:
Windows File Protection
In Windows File Protection, the operating system prevents system DLLs from being updated or deleted by an unauthorized agent. Therefore, when a program installation tries to remove or update a DLL that is defined as a system DLL, Windows File Protection will look for a valid digital signature.
Private DLLs
Private DLLs let you isolate a program from changes that are made to shared DLLs. Private DLLs use version-specific information or an empty .local file to enforce the version of the DLL that is used by the program. To use private DLLs, locate your DLLs in the program root folder. Then, for new programs, add version-specific information to the DLL. For old programs, use an empty .local file. Each method tells the operating system to use the private DLLs that are located in the program root folder.

DLL development

This section describes the issues and the requirements that you should consider when you develop your own DLLs.
Types of DLLs

When you load a DLL in an application, two methods of linking let you call the exported DLL functions. The two methods of linking are load-time dynamic linking and run-time dynamic linking.
Load-time dynamic linking
In load-time dynamic linking, an application makes explicit calls to exported DLL functions like local functions. To use load-time dynamic linking, provide a header (.h) file and an import library (.lib) file when you compile and link the application. When you do this, the linker will provide the system with the information that is required to load the DLL and resolve the exported DLL function locations at load time.
Run-time dynamic linking
In run-time dynamic linking, an application calls either the LoadLibrary function or the LoadLibraryEx function to load the DLL at run time. After the DLL is successfully loaded, you use the GetProcAddress function to obtain the address of the exported DLL function that you want to call. When you use run-time dynamic linking, you do not need an import library file.

The following list describes the application criteria for when to use load-time dynamic linking and when to use run-time dynamic linking:
Startup performance
If the initial startup performance of the application is important, you should use run-time dynamic linking.
Ease of use
In load-time dynamic linking, the exported DLL functions are like local functions. This makes it easy for you to call these functions.
Application logic
In run-time dynamic linking, an application can branch to load different modules as required. This is important when you develop multiple-language versions.
The DLL entry point

When you create a DLL, you can optionally specify an entry point function. The entry point function is called when processes or threads attach themselves to the DLL or detached themselves from the DLL. You can use the entry point function to initialize data structures or to destroy data structures as required by the DLL. Additionally, if the application is multithreaded, you can use thread local storage (TLS) to allocate memory that is private to each thread in the entry point function. The following code is an example of the DLL entry point function.
BOOL APIENTRY DllMain(
HANDLE hModule, // Handle to DLL module
DWORD ul_reason_for_call, // Reason for calling function
LPVOID lpReserved ) // Reserved

switch ( ul_reason_for_call )

case DLL_PROCESS_ATTACHED:
// A process is loading the DLL.
break;
case DLL_THREAD_ATTACHED:
// A process is creating a new thread.
break;
case DLL_THREAD_DETACH:
// A thread exits normally.
break;
case DLL_PROCESS_DETACH:
// A process unloads the DLL.
break;

return TRUE;

When the entry point function returns a FALSE value, the application will not start if you are using load-time dynamic linking. If you are using run-time dynamic linking, only the individual DLL will not load.

The entry point function should only perform simple initialization tasks and should not call any other DLL loading or termination functions. For example, in the entry point function, you should not directly or indirectly call the LoadLibrary function or the LoadLibraryEx function. Additionally, you should not call the FreeLibrary function when the process is terminating.

Note In multithreaded applications, make sure that access to the DLL global data is synchronized (thread safe) to avoid possible data corruption. To do this, use TLS to provide unique data for each thread.
Exporting DLL functions

How to Fix AMSTERDAM_067.WAV

Download Windows AMSTERDAM_067.WAV Diagnostics Tool

To export DLL functions, you can either add a function keyword to the exported DLL functions or create a module definition (.def) file that lists the exported DLL functions.

To use a function keyword, you must declare each function that you want to export with the following keyword:
__declspec(dllexport)
To use exported DLL functions in the application, you must declare each function that you want to import with the following keyword:
__declspec(dllimport)
Typically, you would use one header file that has a define statement and an ifdef statement to separate the export statement and the import statement.

You can also use a module definition file to declare exported DLL functions. When you use a module definition file, you do not have to add the function keyword to the exported DLL functions. In the module definition file, you declare the LIBRARY statement and the EXPORTS statement for the DLL. The following code is an example of a definition file.
// SampleDLL.def
//
LIBRARY “sampleDLL”

EXPORTS
HelloWorld
Sample DLL and application

In Microsoft Visual C++ 6.0, you can create a DLL by selecting either the Win32 Dynamic-Link Library project type or the MFC AppWizard (dll) project type.

The following code is an example of a DLL that was created in Visual C++ by using the Win32 Dynamic-Link Library project type.
// SampleDLL.cpp
//

#include “stdafx.h”
#define EXPORTING_DLL
#include “sampleDLL.h”

BOOL APIENTRY DllMain( HANDLE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved
)

return TRUE;

void HelloWorld()

MessageBox( NULL, TEXT(“Hello World”), TEXT(“In a DLL”), MB_OK);

// File: SampleDLL.h
//
#ifndef INDLL_H
#define INDLL_H

#ifdef EXPORTING_DLL
extern __declspec(dllexport) void HelloWorld() ;
#else
extern __declspec(dllimport) void HelloWorld() ;
#endif

#endif
The following code is an example of a Win32 Application project that calls the exported DLL function in the SampleDLL DLL.
// SampleApp.cpp
//

#include “stdafx.h”
#include “sampleDLL.h”

int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)

HelloWorld();
return 0;

Note In load-time dynamic linking, you must link the SampleDLL.lib import library that is created when you build the SampleDLL project.

In run-time dynamic linking, you use code that is similar to the following code to call the SampleDLL.dll exported DLL function.

typedef VOID (*DLLPROC) (LPTSTR);

HINSTANCE hinstDLL;
DLLPROC HelloWorld;
BOOL fFreeDLL;

hinstDLL = LoadLibrary(“sampleDLL.dll”);
if (hinstDLL != NULL)

HelloWorld = (DLLPROC) GetProcAddress(hinstDLL, “HelloWorld”);
if (HelloWorld != NULL)
(HelloWorld);

fFreeDLL = FreeLibrary(hinstDLL);


When you compile and link the SampleDLL application, the Windows operating system searches for the SampleDLL DLL in the following locations in this order:
The application folder
The current folder
The Windows system folder

Note The Get System Directory function returns the path of the Windows system folder.
The Windows folder

Note The Get Windows Directory function returns the path of the Windows folder.
The .NET Framework assembly

With the introduction of Microsoft .NET and the .NET Framework, most of the problems that are associated with DLLs have been eliminated by using assemblies. An assembly is a logical unit of functionality that runs under the control of the .NET common language runtime (CLR). An assembly physically exists as a .dll file or as an .exe file. However, internally an assembly is very different from a Microsoft Win32 DLL.

By default, when you create an assembly, the assembly is private to the application.

Additionally, version policies let you enforce version-specific usage.

51
Microsoft Windows 98 Second Edition
Microsoft Visual Studio .

Download Windows AMSTERDAM_067.WAV Diagnostics Tool


  • -

AMSTERDAM_066.WAV

Category : Microsoft DLL

Microsoft Solutions for AMSTERDAM_066.WAV

Notice: Windows Error AMSTERDAM_066.WAV happens when your operating system becomes misconfigured, important system files go missing or get damaged. This is a common problem with computers that don’t get maintained regularly. Eventually the system becomes overloaded with problems and begins to crash and display errors.

Recommended Solution: We recommend you download our repair tool. It is designed to diagnose problems on your computer and fix them in just a few minutes with only a few mouse clicks.

Download Microsoft Windows Error Repair Tool

File Size: 6.7 MB
Compatible: Microsoft Windows XP/Vista/7/8/10 (32/64-BIT)
Instructions to diagnose and fix Windows Errors problems:

Please follow the following 3 steps to diagnose and fix your problem:

STEP 1: Download Windows AMSTERDAM_066.WAV Diagnostics Tool

STEP 2: Click Scan to Find The Issue.

STEP 3: Click Fix Errors to Repair Error.

Note: With all the new additional features now included in the repair tool, you will be able to optimize your system to run even faster and stable. It’s not unusual to see an increase of 95%+ in performance.

Operating System Compatibility:Windows XP/Vista/7/8/10 (32/64BIT)
Download Size: 6.7 MB
Version 2015
Expert Support: Yes

For the Microsoft Windows operating systems that are listed in the “Applies to” section, much of the functionality of the operating system is provided by dynamic link libraries (DLL). Additionally, when you run a program on one of these Windows operating systems, much of the functionality of the program may be provided by DLLs. For example, some programs may contain many different modules, and each module of the program is contained and distributed in DLLs.

The use of DLLs helps promote modularization of code, code reuse, efficient memory usage, and reduced disk space. Therefore, the operating system and the programs load faster, run faster, and take less disk space on the computer.

When a program uses a DLL, an issue that is called dependency may cause the program not to run. When a program uses a DLL, a dependency is created. If another program overwrites and breaks this dependency, the original program may not successfully run.

With the introduction of the Microsoft .NET Framework, most dependency problems have been eliminated by using assemblies.
What is a DLL?

A DLL is a library that contains code and data that can be used by more than one program at the same time. For example, in Windows operating systems, the Comdlg32 DLL performs common dialog box related functions. Therefore, each program can use the functionality that is contained in this DLL to implement an Open dialog box. This helps promote code reuse and efficient memory usage.

By using a DLL, a program can be modularized into separate components. For example, an accounting program may be sold by module. Each module can be loaded into the main program at run time if that module is installed. Because the modules are separate, the load time of the program is faster, and a module is only loaded when that functionality is requested.

Download Windows AMSTERDAM_066.WAV Diagnostics Tool

Additionally, updates are easier to apply to each module without affecting other parts of the program. For example, you may have a payroll program, and the tax rates change each year. When these changes are isolated to a DLL, you can apply an update without needing to build or install the whole program again.

The following list describes some of the files that are implemented as DLLs in Windows operating systems:
ActiveX Controls (.ocx) files
An example of an ActiveX control is a calendar control that lets you select a date from a calendar.
Control Panel (.cpl) files
An example of a .cpl file is an item that is located in Control Panel. Each item is a specialized DLL.
Device driver (.drv) files
An example of a device driver is a printer driver that controls the printing to a printer.
DLL advantages

The following list describes some of the advantages that are provided when a program uses a DLL:
Uses fewer resources
When multiple programs use the same library of functions, a DLL can reduce the duplication of code that is loaded on the disk and in physical memory. This can greatly influence the performance of not just the program that is running in the foreground, but also other programs that are running on the Windows operating system.
Promotes modular architecture
A DLL helps promote developing modular programs. This helps you develop large programs that require multiple language versions or a program that requires modular architecture. An example of a modular program is an accounting program that has many modules that can be dynamically loaded at run time.
Eases deployment and installation
When a function within a DLL needs an update or a fix, the deployment and installation of the DLL does not require the program to be relinked with the DLL. Additionally, if multiple programs use the same DLL, the multiple programs will all benefit from the update or the fix. This issue may more frequently occur when you use a third-party DLL that is regularly updated or fixed.
DLL dependencies

When a program or a DLL uses a DLL function in another DLL, a dependency is created. Therefore, the program is no longer self-contained, and the program may experience problems if the dependency is broken. For example, the program may not run if one of the following actions occurs:
A dependent DLL is upgraded to a new version.
A dependent DLL is fixed.
A dependent DLL is overwritten with an earlier version.
A dependent DLL is removed from the computer.
These actions are generally known as DLL conflicts. If backward compatibility is not enforced, the program may not successfully run.

The following list describes the changes that have been introduced in Microsoft Windows 2000 and in later Windows operating systems to help minimize dependency issues:
Windows File Protection
In Windows File Protection, the operating system prevents system DLLs from being updated or deleted by an unauthorized agent. Therefore, when a program installation tries to remove or update a DLL that is defined as a system DLL, Windows File Protection will look for a valid digital signature.
Private DLLs
Private DLLs let you isolate a program from changes that are made to shared DLLs. Private DLLs use version-specific information or an empty .local file to enforce the version of the DLL that is used by the program. To use private DLLs, locate your DLLs in the program root folder. Then, for new programs, add version-specific information to the DLL. For old programs, use an empty .local file. Each method tells the operating system to use the private DLLs that are located in the program root folder.

DLL dependencies

When a program or a DLL uses a DLL function in another DLL, a dependency is created. Therefore, the program is no longer self-contained, and the program may experience problems if the dependency is broken. For example, the program may not run if one of the following actions occurs:
A dependent DLL is upgraded to a new version.
A dependent DLL is fixed.
A dependent DLL is overwritten with an earlier version.
A dependent DLL is removed from the computer.
These actions are generally known as DLL conflicts. If backward compatibility is not enforced, the program may not successfully run.

The following list describes the changes that have been introduced in Microsoft Windows 2000 and in later Windows operating systems to help minimize dependency issues:
Windows File Protection
In Windows File Protection, the operating system prevents system DLLs from being updated or deleted by an unauthorized agent. Therefore, when a program installation tries to remove or update a DLL that is defined as a system DLL, Windows File Protection will look for a valid digital signature.
Private DLLs
Private DLLs let you isolate a program from changes that are made to shared DLLs. Private DLLs use version-specific information or an empty .local file to enforce the version of the DLL that is used by the program. To use private DLLs, locate your DLLs in the program root folder. Then, for new programs, add version-specific information to the DLL. For old programs, use an empty .local file. Each method tells the operating system to use the private DLLs that are located in the program root folder.

DLL development

This section describes the issues and the requirements that you should consider when you develop your own DLLs.
Types of DLLs

When you load a DLL in an application, two methods of linking let you call the exported DLL functions. The two methods of linking are load-time dynamic linking and run-time dynamic linking.
Load-time dynamic linking
In load-time dynamic linking, an application makes explicit calls to exported DLL functions like local functions. To use load-time dynamic linking, provide a header (.h) file and an import library (.lib) file when you compile and link the application. When you do this, the linker will provide the system with the information that is required to load the DLL and resolve the exported DLL function locations at load time.
Run-time dynamic linking
In run-time dynamic linking, an application calls either the LoadLibrary function or the LoadLibraryEx function to load the DLL at run time. After the DLL is successfully loaded, you use the GetProcAddress function to obtain the address of the exported DLL function that you want to call. When you use run-time dynamic linking, you do not need an import library file.

The following list describes the application criteria for when to use load-time dynamic linking and when to use run-time dynamic linking:
Startup performance
If the initial startup performance of the application is important, you should use run-time dynamic linking.
Ease of use
In load-time dynamic linking, the exported DLL functions are like local functions. This makes it easy for you to call these functions.
Application logic
In run-time dynamic linking, an application can branch to load different modules as required. This is important when you develop multiple-language versions.
The DLL entry point

When you create a DLL, you can optionally specify an entry point function. The entry point function is called when processes or threads attach themselves to the DLL or detached themselves from the DLL. You can use the entry point function to initialize data structures or to destroy data structures as required by the DLL. Additionally, if the application is multithreaded, you can use thread local storage (TLS) to allocate memory that is private to each thread in the entry point function. The following code is an example of the DLL entry point function.
BOOL APIENTRY DllMain(
HANDLE hModule, // Handle to DLL module
DWORD ul_reason_for_call, // Reason for calling function
LPVOID lpReserved ) // Reserved

switch ( ul_reason_for_call )

case DLL_PROCESS_ATTACHED:
// A process is loading the DLL.
break;
case DLL_THREAD_ATTACHED:
// A process is creating a new thread.
break;
case DLL_THREAD_DETACH:
// A thread exits normally.
break;
case DLL_PROCESS_DETACH:
// A process unloads the DLL.
break;

return TRUE;

When the entry point function returns a FALSE value, the application will not start if you are using load-time dynamic linking. If you are using run-time dynamic linking, only the individual DLL will not load.

The entry point function should only perform simple initialization tasks and should not call any other DLL loading or termination functions. For example, in the entry point function, you should not directly or indirectly call the LoadLibrary function or the LoadLibraryEx function. Additionally, you should not call the FreeLibrary function when the process is terminating.

Note In multithreaded applications, make sure that access to the DLL global data is synchronized (thread safe) to avoid possible data corruption. To do this, use TLS to provide unique data for each thread.
Exporting DLL functions

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To export DLL functions, you can either add a function keyword to the exported DLL functions or create a module definition (.def) file that lists the exported DLL functions.

To use a function keyword, you must declare each function that you want to export with the following keyword:
__declspec(dllexport)
To use exported DLL functions in the application, you must declare each function that you want to import with the following keyword:
__declspec(dllimport)
Typically, you would use one header file that has a define statement and an ifdef statement to separate the export statement and the import statement.

You can also use a module definition file to declare exported DLL functions. When you use a module definition file, you do not have to add the function keyword to the exported DLL functions. In the module definition file, you declare the LIBRARY statement and the EXPORTS statement for the DLL. The following code is an example of a definition file.
// SampleDLL.def
//
LIBRARY “sampleDLL”

EXPORTS
HelloWorld
Sample DLL and application

In Microsoft Visual C++ 6.0, you can create a DLL by selecting either the Win32 Dynamic-Link Library project type or the MFC AppWizard (dll) project type.

The following code is an example of a DLL that was created in Visual C++ by using the Win32 Dynamic-Link Library project type.
// SampleDLL.cpp
//

#include “stdafx.h”
#define EXPORTING_DLL
#include “sampleDLL.h”

BOOL APIENTRY DllMain( HANDLE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved
)

return TRUE;

void HelloWorld()

MessageBox( NULL, TEXT(“Hello World”), TEXT(“In a DLL”), MB_OK);

// File: SampleDLL.h
//
#ifndef INDLL_H
#define INDLL_H

#ifdef EXPORTING_DLL
extern __declspec(dllexport) void HelloWorld() ;
#else
extern __declspec(dllimport) void HelloWorld() ;
#endif

#endif
The following code is an example of a Win32 Application project that calls the exported DLL function in the SampleDLL DLL.
// SampleApp.cpp
//

#include “stdafx.h”
#include “sampleDLL.h”

int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)

HelloWorld();
return 0;

Note In load-time dynamic linking, you must link the SampleDLL.lib import library that is created when you build the SampleDLL project.

In run-time dynamic linking, you use code that is similar to the following code to call the SampleDLL.dll exported DLL function.

typedef VOID (*DLLPROC) (LPTSTR);

HINSTANCE hinstDLL;
DLLPROC HelloWorld;
BOOL fFreeDLL;

hinstDLL = LoadLibrary(“sampleDLL.dll”);
if (hinstDLL != NULL)

HelloWorld = (DLLPROC) GetProcAddress(hinstDLL, “HelloWorld”);
if (HelloWorld != NULL)
(HelloWorld);

fFreeDLL = FreeLibrary(hinstDLL);


When you compile and link the SampleDLL application, the Windows operating system searches for the SampleDLL DLL in the following locations in this order:
The application folder
The current folder
The Windows system folder

Note The Get System Directory function returns the path of the Windows system folder.
The Windows folder

Note The Get Windows Directory function returns the path of the Windows folder.
The .NET Framework assembly

With the introduction of Microsoft .NET and the .NET Framework, most of the problems that are associated with DLLs have been eliminated by using assemblies. An assembly is a logical unit of functionality that runs under the control of the .NET common language runtime (CLR). An assembly physically exists as a .dll file or as an .exe file. However, internally an assembly is very different from a Microsoft Win32 DLL.

The assembly manifest contains the assembly metadata that provides all the information that is required for an assembly to be self-describing.

Therefore, the CLR can maintain a consistent set of assemblies that are used in the application.

51
Microsoft Windows 98 Second Edition
Microsoft Visual Studio .

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AMSTERDAM_065.WAV

Category : Microsoft DLL

Microsoft Solutions for AMSTERDAM_065.WAV

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For the Microsoft Windows operating systems that are listed in the “Applies to” section, much of the functionality of the operating system is provided by dynamic link libraries (DLL). Additionally, when you run a program on one of these Windows operating systems, much of the functionality of the program may be provided by DLLs. For example, some programs may contain many different modules, and each module of the program is contained and distributed in DLLs.

The use of DLLs helps promote modularization of code, code reuse, efficient memory usage, and reduced disk space. Therefore, the operating system and the programs load faster, run faster, and take less disk space on the computer.

When a program uses a DLL, an issue that is called dependency may cause the program not to run. When a program uses a DLL, a dependency is created. If another program overwrites and breaks this dependency, the original program may not successfully run.

With the introduction of the Microsoft .NET Framework, most dependency problems have been eliminated by using assemblies.
What is a DLL?

A DLL is a library that contains code and data that can be used by more than one program at the same time. For example, in Windows operating systems, the Comdlg32 DLL performs common dialog box related functions. Therefore, each program can use the functionality that is contained in this DLL to implement an Open dialog box. This helps promote code reuse and efficient memory usage.

By using a DLL, a program can be modularized into separate components. For example, an accounting program may be sold by module. Each module can be loaded into the main program at run time if that module is installed. Because the modules are separate, the load time of the program is faster, and a module is only loaded when that functionality is requested.

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Additionally, updates are easier to apply to each module without affecting other parts of the program. For example, you may have a payroll program, and the tax rates change each year. When these changes are isolated to a DLL, you can apply an update without needing to build or install the whole program again.

The following list describes some of the files that are implemented as DLLs in Windows operating systems:
ActiveX Controls (.ocx) files
An example of an ActiveX control is a calendar control that lets you select a date from a calendar.
Control Panel (.cpl) files
An example of a .cpl file is an item that is located in Control Panel. Each item is a specialized DLL.
Device driver (.drv) files
An example of a device driver is a printer driver that controls the printing to a printer.
DLL advantages

The following list describes some of the advantages that are provided when a program uses a DLL:
Uses fewer resources
When multiple programs use the same library of functions, a DLL can reduce the duplication of code that is loaded on the disk and in physical memory. This can greatly influence the performance of not just the program that is running in the foreground, but also other programs that are running on the Windows operating system.
Promotes modular architecture
A DLL helps promote developing modular programs. This helps you develop large programs that require multiple language versions or a program that requires modular architecture. An example of a modular program is an accounting program that has many modules that can be dynamically loaded at run time.
Eases deployment and installation
When a function within a DLL needs an update or a fix, the deployment and installation of the DLL does not require the program to be relinked with the DLL. Additionally, if multiple programs use the same DLL, the multiple programs will all benefit from the update or the fix. This issue may more frequently occur when you use a third-party DLL that is regularly updated or fixed.
DLL dependencies

When a program or a DLL uses a DLL function in another DLL, a dependency is created. Therefore, the program is no longer self-contained, and the program may experience problems if the dependency is broken. For example, the program may not run if one of the following actions occurs:
A dependent DLL is upgraded to a new version.
A dependent DLL is fixed.
A dependent DLL is overwritten with an earlier version.
A dependent DLL is removed from the computer.
These actions are generally known as DLL conflicts. If backward compatibility is not enforced, the program may not successfully run.

The following list describes the changes that have been introduced in Microsoft Windows 2000 and in later Windows operating systems to help minimize dependency issues:
Windows File Protection
In Windows File Protection, the operating system prevents system DLLs from being updated or deleted by an unauthorized agent. Therefore, when a program installation tries to remove or update a DLL that is defined as a system DLL, Windows File Protection will look for a valid digital signature.
Private DLLs
Private DLLs let you isolate a program from changes that are made to shared DLLs. Private DLLs use version-specific information or an empty .local file to enforce the version of the DLL that is used by the program. To use private DLLs, locate your DLLs in the program root folder. Then, for new programs, add version-specific information to the DLL. For old programs, use an empty .local file. Each method tells the operating system to use the private DLLs that are located in the program root folder.

DLL dependencies

When a program or a DLL uses a DLL function in another DLL, a dependency is created. Therefore, the program is no longer self-contained, and the program may experience problems if the dependency is broken. For example, the program may not run if one of the following actions occurs:
A dependent DLL is upgraded to a new version.
A dependent DLL is fixed.
A dependent DLL is overwritten with an earlier version.
A dependent DLL is removed from the computer.
These actions are generally known as DLL conflicts. If backward compatibility is not enforced, the program may not successfully run.

The following list describes the changes that have been introduced in Microsoft Windows 2000 and in later Windows operating systems to help minimize dependency issues:
Windows File Protection
In Windows File Protection, the operating system prevents system DLLs from being updated or deleted by an unauthorized agent. Therefore, when a program installation tries to remove or update a DLL that is defined as a system DLL, Windows File Protection will look for a valid digital signature.
Private DLLs
Private DLLs let you isolate a program from changes that are made to shared DLLs. Private DLLs use version-specific information or an empty .local file to enforce the version of the DLL that is used by the program. To use private DLLs, locate your DLLs in the program root folder. Then, for new programs, add version-specific information to the DLL. For old programs, use an empty .local file. Each method tells the operating system to use the private DLLs that are located in the program root folder.

DLL development

This section describes the issues and the requirements that you should consider when you develop your own DLLs.
Types of DLLs

When you load a DLL in an application, two methods of linking let you call the exported DLL functions. The two methods of linking are load-time dynamic linking and run-time dynamic linking.
Load-time dynamic linking
In load-time dynamic linking, an application makes explicit calls to exported DLL functions like local functions. To use load-time dynamic linking, provide a header (.h) file and an import library (.lib) file when you compile and link the application. When you do this, the linker will provide the system with the information that is required to load the DLL and resolve the exported DLL function locations at load time.
Run-time dynamic linking
In run-time dynamic linking, an application calls either the LoadLibrary function or the LoadLibraryEx function to load the DLL at run time. After the DLL is successfully loaded, you use the GetProcAddress function to obtain the address of the exported DLL function that you want to call. When you use run-time dynamic linking, you do not need an import library file.

The following list describes the application criteria for when to use load-time dynamic linking and when to use run-time dynamic linking:
Startup performance
If the initial startup performance of the application is important, you should use run-time dynamic linking.
Ease of use
In load-time dynamic linking, the exported DLL functions are like local functions. This makes it easy for you to call these functions.
Application logic
In run-time dynamic linking, an application can branch to load different modules as required. This is important when you develop multiple-language versions.
The DLL entry point

When you create a DLL, you can optionally specify an entry point function. The entry point function is called when processes or threads attach themselves to the DLL or detached themselves from the DLL. You can use the entry point function to initialize data structures or to destroy data structures as required by the DLL. Additionally, if the application is multithreaded, you can use thread local storage (TLS) to allocate memory that is private to each thread in the entry point function. The following code is an example of the DLL entry point function.
BOOL APIENTRY DllMain(
HANDLE hModule, // Handle to DLL module
DWORD ul_reason_for_call, // Reason for calling function
LPVOID lpReserved ) // Reserved

switch ( ul_reason_for_call )

case DLL_PROCESS_ATTACHED:
// A process is loading the DLL.
break;
case DLL_THREAD_ATTACHED:
// A process is creating a new thread.
break;
case DLL_THREAD_DETACH:
// A thread exits normally.
break;
case DLL_PROCESS_DETACH:
// A process unloads the DLL.
break;

return TRUE;

When the entry point function returns a FALSE value, the application will not start if you are using load-time dynamic linking. If you are using run-time dynamic linking, only the individual DLL will not load.

The entry point function should only perform simple initialization tasks and should not call any other DLL loading or termination functions. For example, in the entry point function, you should not directly or indirectly call the LoadLibrary function or the LoadLibraryEx function. Additionally, you should not call the FreeLibrary function when the process is terminating.

Note In multithreaded applications, make sure that access to the DLL global data is synchronized (thread safe) to avoid possible data corruption. To do this, use TLS to provide unique data for each thread.
Exporting DLL functions

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To export DLL functions, you can either add a function keyword to the exported DLL functions or create a module definition (.def) file that lists the exported DLL functions.

To use a function keyword, you must declare each function that you want to export with the following keyword:
__declspec(dllexport)
To use exported DLL functions in the application, you must declare each function that you want to import with the following keyword:
__declspec(dllimport)
Typically, you would use one header file that has a define statement and an ifdef statement to separate the export statement and the import statement.

You can also use a module definition file to declare exported DLL functions. When you use a module definition file, you do not have to add the function keyword to the exported DLL functions. In the module definition file, you declare the LIBRARY statement and the EXPORTS statement for the DLL. The following code is an example of a definition file.
// SampleDLL.def
//
LIBRARY “sampleDLL”

EXPORTS
HelloWorld
Sample DLL and application

In Microsoft Visual C++ 6.0, you can create a DLL by selecting either the Win32 Dynamic-Link Library project type or the MFC AppWizard (dll) project type.

The following code is an example of a DLL that was created in Visual C++ by using the Win32 Dynamic-Link Library project type.
// SampleDLL.cpp
//

#include “stdafx.h”
#define EXPORTING_DLL
#include “sampleDLL.h”

BOOL APIENTRY DllMain( HANDLE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved
)

return TRUE;

void HelloWorld()

MessageBox( NULL, TEXT(“Hello World”), TEXT(“In a DLL”), MB_OK);

// File: SampleDLL.h
//
#ifndef INDLL_H
#define INDLL_H

#ifdef EXPORTING_DLL
extern __declspec(dllexport) void HelloWorld() ;
#else
extern __declspec(dllimport) void HelloWorld() ;
#endif

#endif
The following code is an example of a Win32 Application project that calls the exported DLL function in the SampleDLL DLL.
// SampleApp.cpp
//

#include “stdafx.h”
#include “sampleDLL.h”

int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)

HelloWorld();
return 0;

Note In load-time dynamic linking, you must link the SampleDLL.lib import library that is created when you build the SampleDLL project.

In run-time dynamic linking, you use code that is similar to the following code to call the SampleDLL.dll exported DLL function.

typedef VOID (*DLLPROC) (LPTSTR);

HINSTANCE hinstDLL;
DLLPROC HelloWorld;
BOOL fFreeDLL;

hinstDLL = LoadLibrary(“sampleDLL.dll”);
if (hinstDLL != NULL)

HelloWorld = (DLLPROC) GetProcAddress(hinstDLL, “HelloWorld”);
if (HelloWorld != NULL)
(HelloWorld);

fFreeDLL = FreeLibrary(hinstDLL);


When you compile and link the SampleDLL application, the Windows operating system searches for the SampleDLL DLL in the following locations in this order:
The application folder
The current folder
The Windows system folder

Note The Get System Directory function returns the path of the Windows system folder.
The Windows folder

Note The Get Windows Directory function returns the path of the Windows folder.
The .NET Framework assembly

With the introduction of Microsoft .NET and the .NET Framework, most of the problems that are associated with DLLs have been eliminated by using assemblies. An assembly is a logical unit of functionality that runs under the control of the .NET common language runtime (CLR). An assembly physically exists as a .dll file or as an .exe file. However, internally an assembly is very different from a Microsoft Win32 DLL.

Instead, MSIL code execution is managed through the CLR.

NET languages.

NET 2002 Academic Edition
Microsoft Visual Studio 6.

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