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);
Returns ICERR_OK if successful or an error otherwise.
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.
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Unsupported.
Header: Declared in vfw.h.
Video Compression Manager Overview, Video Compression Messages, ICDECOMPRESSEX, ICM_DECOMPRESS, ICM_DECOMPRESSEX_BEGIN, ICM_DRAW