Win32API.inc error

[José Roca]

Right. For one example posted in my forum I had to use BYVAL CODEPTR(MonitorEnumProc).

[Dominic Mitchell]

The following declare is incorrect:

DECLARE FUNCTION EnumDisplayMonitors LIB "USER32.DLL" ALIAS "EnumDisplayMonitors" (BYVAL hdc AS DWORD, lprcClip AS RECT, lpfnEnum AS DWORD, BYVAL dwData AS LONG) AS LONG

It should be

DECLARE FUNCTION EnumDisplayMonitors LIB "USER32.DLL" ALIAS "EnumDisplayMonitors" (BYVAL hdc AS DWORD, lprcClip AS RECT, BYVAL lpfnEnum AS DWORD, BYVAL dwData AS LONG) AS LONG

The addresses of callbacks are never passed by reference.