public static Graphics FromHdc(IntPtr hdc)
{
if (hdc != IntPtr.Zero)
{
throw new NotImplementedException();
}
int xSize, ySize;
PixelFormat pixelFormat;
IntPtr native = LibIGraph.GetScreen(out xSize, out ySize, out pixelFormat);
if (native == IntPtr.Zero)
{
throw new Exception("CreateScreen() failed");
}
return(new Graphics(xSize, ySize, pixelFormat, native));
}