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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. An example of a modular program is an accounting program that has many modules that can be dynamically loaded at run time. It helps you develop large programs that require multiple language versions or a program that requires modular architecture. It 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.Ī DLL helps promote developing modular programs. 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. The following list describes some of the advantages that are provided when a program uses a DLL:

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

Ni opc server high cpu and memory usage install#

When these changes are isolated to a DLL, you can apply an update without needing to build or install the whole program again. For example, you may have a payroll program, and the tax rates change each year. And a module is only loaded when that functionality is requested.Īdditionally, updates are easier to apply to each module without affecting other parts of the program. Because the modules are separate, the load time of the program is faster. Each module can be loaded into the main program at run time if that module is installed. For example, an accounting program may be sold by module. It helps promote code reuse and efficient memory usage.īy using a DLL, a program can be modularized into separate components. Each program can use the functionality that is contained in this DLL to implement an Open dialog box. For example, in Windows operating systems, the Comdlg32 DLL performs common dialog box related functions. More informationĪ DLL is a library that contains code and data that can be used by more than one program at the same time.

NET Framework, most dependency problems have been eliminated by using assemblies. If another program overwrites and breaks this dependency, the original program may not successfully run. When a program uses a DLL, a dependency is created.

When a program uses a DLL, an issue that is called dependency may cause the program not to run. So, the operating system and the programs load faster, run faster, and take less disk space on the computer. The use of DLLs helps promote modularization of code, code reuse, efficient memory usage, and reduced disk space.

For example, some programs may contain many different modules, and each module of the program is contained and distributed in DLLs. 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. NET Framework assemblies.įor the Windows operating systems, much of the functionality of the operating system is provided by DLL. This article finishes with a high-level comparison of DLLs to the Microsoft. In describing what a DLL is, this article describes dynamic linking methods, DLL dependencies, DLL entry points, exporting DLL functions, and DLL troubleshooting tools.

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It also describes some advanced issues that you should consider when developing your own DLLs.Īpplies to: Windows 10 - all editions Original KB number: 815065 Summary This article describes what a dynamic link library (DLL) is and the various issues that may occur when you use DLLs.