ICM_COMPRESS_GET_FORMAT

	Overview

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The ICM_COMPRESS_GET_FORMAT message requests the output format of the compressed data from a video compression driver. You can send this message explicitly or by using the ICCompressGetFormat macro.

wParam = (DWORD) (LPVOID) lpbiInput;

lParam = (DWORD) (LPVOID) lpbiOutput;

Parameters
lpbiInput

Address of a BITMAPINFO structure containing the input format.

lpbiOutput

Address of a BITMAPINFO structure to contain the output format. You can specify zero for this parameter to request only the size of the output format, as in the ICCompressGetFormatSize macro.

Return Values
If lpbiOutput is zero, returns the size of the structure.

If lpbiOutput is nonzero, returns ICERR_OK if successful or an error otherwise.

Remarks
If lpbiOutput is nonzero, the driver should fill the BITMAPINFO structure with the default output format corresponding to the input format specified for lpbiInput. If the compressor can produce several formats, the default format should be the one that preserves the greatest amount of information.

See Also
BITMAPINFO, ICCompressGetFormat, ICCompressGetFormatSize

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