Glossary of Terms – What Is DLL File (Dynamic Link Library)

When executing a specific procedure, the corresponding DLL file will be called.

An software can use multiple DLL files, and a DLL file may be also used by different applications.

DLL files contain functions of various programs.

In Windows, there is a DLL file called Comdlg32.dll that can perform common dialog box related functions.

And each utility can use the functionality included in this DLL to call anOpendialog box.

This facilitates code reuse and efficient memory usage.

Promotes modular architecture

A DLL contributes to the development of modular programs.

This can help users to develop applications that require multiple language versions or a modular architecture.

For example, the accounting program has many modules that can be dynamically loaded when running.

And they are load-time dynamic linking and run-time dynamic linking.

In load-time dynamic linking, a program can make explicit calls to exported DLL functions like local functions.

When using this linking, no import library files are required.

It is likely that DLL issues happen.

This post Missing DLL Files in Windows 10/8/7?

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