public static void WindingModeOutline(this GraphicsPath graphicsPath)
        {
            IntPtr    handle = (IntPtr)graphicsPath.GetType().GetField("nativePath", BindingFlags.NonPublic | BindingFlags.Instance).GetValue(graphicsPath);
            HandleRef path   = new HandleRef(graphicsPath, handle);

            NativeMethods.GdipWindingModeOutline(path, IntPtr.Zero, 0.25F);
        }