wParam = (DWORD) (LPVOID) pv;
lParam = (DWORD) cb;
Notifies a video compression driver to set the state of the compressor.
The information used by ICM_SETSTATE 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 ICM_CONFIGURE to adjust the configuration of a video compression driver.
ICM_CONFIGURE, ICM_GETSTATE