Windows\v6.1\Include\MAPIWin.h:#define INVALID_HANDLE_VALUE             ((HANDLE)(-1))
Windows\v6.1\Include\Pdh.h:#define INVALID_HANDLE_VALUE  ((HANDLE)((LONG_PTR)-1))
Windows\v6.1\Include\WinBase.h:#define INVALID_HANDLE_VALUE ((HANDLE)(LONG_PTR)-1)