3.1. What version of MFC am I using?

Microsoft Visual C++/Microsoft Foundation Classes


3.1. How do I know what version of MFC I'm using?

Check the top of the MFC header file afxver_.h (lives in mfc\include\afxver_.h). Older versions use afxver.h. In there you will see a #define for _MFC_VER.

This is the hex version of the MFC release with this key:

0x0250
           |_________ Point release ( very minor)
         |__________ Minor number
      |___________ Major number
 
So in this example, the MFC release is 2.5.0.