STDAPI
Defines an API function that returns an HRESULT.
#define STDAPI EXTERN_C HRESULT STDAPICALLTYPE
Requirements
For an explanation of the requirement values, see Requirements (COM).
Windows NT/2000/XP: Requires Windows NT 3.1 or later.
Windows 95/98: Requires Windows 95 or later.
Header: Declared in basetyps.h.