public Surface(int width, int height, int depth, long rMask, long gMask, long bMask, long aMask)
{
SurfacePtr = SDL.CreateRgbSurface(0, width, height, depth, (uint)rMask, (uint)gMask, (uint)bMask,
(uint)aMask);
Util.ThrowIfFailed(SurfacePtr);
}