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ICM_DECOMPRESSEX_QUERY message

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The ICM_DECOMPRESSEX_QUERY message queries a video compression driver to determine if it supports a specific input format or if it can decompress a specific input format to a specific output format.

ICM_DECOMPRESSEX_QUERY 
wParam = (DWORD_PTR) (LPVOID) &icdex; 
lParam = sizeof(ICDECOMPRESSEX);

Parameters

icdex

Pointer to a ICDECOMPRESSEX structure containing the input format.

lParam

Size, in bytes, of ICDECOMPRESSEX.

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