See also ICINFO, ICM_ABOUT
wParam = (DWORD) (LPVOID) lpicinfo; lParam = sizeof(icinfo);
Queries a video compression driver to return a description of itself in an ICINFO structure.
wParam
Address of an ICINFO structure to return information.
lParam
Size, in bytes, of the ICINFO structure.
Typically, applications send this message to display a list of the installed compressors.
The driver should fill in all members of the ICINFO structure except szDriver.