private static extern void DrawColor(IntPtr wand, double x, double y, PaintMethodType paintmethod);
 private static extern void DrawMatte(IntPtr wand, double x, double y, PaintMethodType paint_method);
 private static extern void DrawMatte(IntPtr wand, double x, double y, PaintMethodType paint_method);
 private static extern void DrawColor(IntPtr wand, double x, double y, PaintMethodType paintmethod);