3 ms·

Win32 is the consistent branding Microsoft has used to describe its C/C++ API for the last 20 years. It's many things though, GDI, User32, NT, DirectX, etc.

• int_19h 6y ago
  It's no longer true because of WinRT - which also has a C/C++ API, but is not considered Win32.
• mycall 6y ago
  Win32 came with WinNT, so at least 25 years now.