The ICM_COMPRESS_QUERY message queries a video compression driver to determine if it supports a specific input format or if it can compress a specific input format to a specific output format. You can send this message explicitly or by using the ICCompressQuery macro.
ICM_COMPRESS_QUERY
wParam = (DWORD) (LPVOID) lpbiInput;
lParam = (DWORD) (LPVOID) lpbiOutput;
Returns ICERR_OK if the specified compression is supported or ICERR_BADFORMAT otherwise.
When a driver receives this message, it should examine the BITMAPINFO structure associated with lpbiInput to determine if it can compress the input format.
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Unsupported.
Header: Declared in vfw.h.
Video Compression Manager Overview, Video Compression Messages, BITMAPINFO, ICCompressQuery