4 ms·If they didn't use MFC, WinForms and WPF what exactly were they using? Flash?by eyq1 9y agoIf they didn't use MFC, WinForms and WPF what exactly were they using? Flash?maxxxxx 9y agoWin32Flow 9y agoAnd WTL, Windows Template Library. https://en.wikipedia.org/wiki/Windows_Template_Library https://en.wikipedia.org/wiki/Windows_Template_Librarymaxxxxx 9y agoWTL is way old.Flow 9y agoYes, but it's far newer than Win32 and MFC. There's also ATL, Active Template Library.