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ICM_DECOMPRESS_QUERY message

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The ICM_DECOMPRESS_QUERY message queries a video decompression driver to determine if it supports a specific input format or if it can decompress a specific input format to a specific output format. You can send this message explicitly or by using the ICDecompressQuery macro.

ICM_DECOMPRESS_QUERY 
wParam = (DWORD_PTR) (LPVOID) lpbiInput; 
lParam = (DWORD_PTR) (LPVOID) lpbiOutput;

Parameters

lpbiInput

Pointer to a BITMAPINFO structure containing the input format.

lpbiOutput

Pointer to a BITMAPINFO structure containing the output format. You can specify zero for this parameter to indicate any output format is acceptable.

Return Value

Returns ICERR_OK if the specified decompression is supported or ICERR_BADFORMAT otherwise.

Requirements

Requirement Value
Minimum supported client
 Windows 2000 Professional [desktop apps only]
Minimum supported server
 Windows 2000 Server [desktop apps only]
Header
Vfw.h

See also

Video Compression Manager

Video Compression Messages