The `mfc90.dll` is a dynamic link library file, a component of the Microsoft Foundation Classes (MFC) developed by Microsoft Corporation. This DLL specifically corresponds to the Microsoft Visual Studio 2008 version. The MFC is a library that provides a collection of classes, taking much of the tedium out of writing Windows applications using C++.
The MFC is designed to simplify many of the mundane tasks associated with developing Windows applications in C++. This includes tasks such as creating windows, menus, and handling messages. The `mfc90.dll` embodies this framework for applications built using the Visual Studio 2008 environment. The "Retail Version" descriptor suggests that this DLL is the version distributed with finalized and commercially released software, as opposed to debug or development versions.
For developers, especially those using C++ in the Visual Studio 2008 environment, this DLL provides a host of functionalities that enable them to develop applications more efficiently, eliminating the need to rewrite commonly used codes. Instead, they can rely on the predefined classes offered by MFC.
For general users, the operations of this DLL are largely unseen, running in the background. When running an application developed in Visual Studio 2008 that utilizes MFC, this library plays an integral role. However, if there's an error related to `mfc90.dll` such as it being missing or corrupted, it often means that there might be an issue with the application's installation or with the Visual C++ Redistributable package for Visual Studio 2008. Resolving the issue might require reinstalling the application or the corresponding Visual C++ Redistributable package, both of which would ideally ensure the proper functioning of `mfc90.dll` and, by extension, the applications dependent on it.
