Summary of Differences Between 16-Bit and 32-Bit MFC

Version 3.0 and later of the Microsoft Foundation Class Library (MFC) uses the Win32 application programming interface (API). Many of the Win32 API functions are encapsulated in MFC class member functions. However, one of the fundamental tenets of programming with MFC is that you can always make direct calls to the Windows API.

Differences between the 16-bit versions of MFC and the 32-bit versions include: