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ICM_SETSTATE message

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The ICM_SETSTATE message notifies a video compression driver to set the state of the compressor. You can send this message explicitly or by using the ICSetState macro.

ICM_SETSTATE 
wParam = (DWORD_PTR) (LPVOID) pv; 
lParam = (DWORD_PTR) cb;

Parameters

pv

Pointer to a block of memory containing configuration data. You can specify NULL for this parameter to reset the compressor to its default state.

cb

Size, in bytes, of the block of memory.

Return Value

Returns the number of bytes used by the compressor if successful or zero otherwise.

Remarks

The information used by this message is private and specific to a given compressor. Client applications should use this message only to restore information previously obtained with the ICM_GETSTATE message and should use the ICM_CONFIGURE message to adjust the configuration of a video compression driver.

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