ICM_DECOMPRESSEX

The ICM_DECOMPRESSEX message notifies a video compression driver to decompress a frame of data directly to the screen, decompress to an upside-down DIB, or decompress images described with source and destination rectangles.

ICM_DECOMPRESSEX 
wParam = (DWORD) (LPVOID) &icdex; 
lParam = sizeof(ICDECOMPRESSEX); 
 

Parameters

icdex

Address of an ICDECOMPRESSEX structure.

lParam

Size, in bytes, of ICDECOMPRESSEX.

Return Values

Returns ICERR_OK if successful or an error otherwise.

Remarks

This message is similar to ICM_DECOMPRESS except that it uses the ICDECOMPRESSEX structure to define its decompression information.

If you want the driver to decompress data directly to the screen, send the ICM_DRAW message.

The driver returns an error if this message is received before the ICM_DECOMPRESSEX_BEGIN message.

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Unsupported.
  Header: Declared in vfw.h.

See Also

Video Compression Manager Overview, Video Compression Messages, ICDECOMPRESSEX, ICM_DECOMPRESS, ICM_DECOMPRESSEX_BEGIN, ICM_DRAW