public static unsafe extern IntPtr ICSeqCompressFrame( COMPVARS* pc, UInt32 uiFlags, IntPtr lpBits, Int32* pfKey, Int32* plSize );
public static unsafe extern int ICCompressorChoose( IntPtr hwnd, UInt32 uiFlags, IntPtr pvIn, IntPtr lpData, COMPVARS* pc, string lpszTitle );
public static unsafe extern void ICCompressorFree( COMPVARS* pc );
public static unsafe extern void ICSeqCompressFrameEnd( COMPVARS* pc );
public static unsafe extern int ICSeqCompressFrameStart( COMPVARS* pc, BITMAPINFO* lpbiIn );