Processes that explicitly link to a DLL call the FreeLibrary function when the DLL module is no longer needed. This function decrements the module's reference count. And, if the reference count is zero, it's unmapped from the address space of the process.

In an MFC application, use AfxFreeLibrary instead of FreeLibrary to unload an MFC extension DLL. The interface (function prototype) for AfxFreeLibrary is the same as FreeLibrary.

• Link an executable to a DLL

• Link an executable to a DLL

• LoadLibrary and AfxLoadLibrary

• GetProcAddress

Create C/C++ DLLs in Visual Studio
FreeLibrary
AfxFreeLibrary