public static extern TInt XIGetProperty( IntPtr display, TInt deviceid, IntPtr property, long offset, long length, TBoolean delete_property, IntPtr type, ref IntPtr type_return, ref TInt format_return, ref TUlong num_items_return, TUlong bytes_after_return, TChar[] data );
extern public static void XFreeColors(IntPtr x11display, IntPtr colormap, TPixel[] pixels, TInt nPixels, TUlong planes);
extern public static IntPtr XCreateGC(IntPtr x11display, IntPtr x11drawable, TUlong valuesMask, ref XGCValues values);
extern public static void XCopyPlane(IntPtr x11display, IntPtr X11drawableSrc, IntPtr X11drawableDest, IntPtr X11gc, TInt srcOffsetX, TInt srcOffsetY, TUint width, TUint height, TInt dstOffsetX, TInt dstOffsetY, TUlong plane);