public void EnumerateMetafile(Metafile metafile, PointF[] destPoints, RectangleF srcRect, GraphicsUnit unit, EnumerateMetafileProc callback, IntPtr callbackData, ImageAttributes imageAttr)
 {
     if (destPoints == null)
     {
         throw new ArgumentNullException("destPoints");
     }
     if (destPoints.Length != 3)
     {
         throw new ArgumentException(System.Drawing.SR.GetString("GdiplusDestPointsInvalidParallelogram"));
     }
     IntPtr handle = (metafile == null) ? IntPtr.Zero : metafile.nativeImage;
     IntPtr ptr2 = (imageAttr == null) ? IntPtr.Zero : imageAttr.nativeImageAttributes;
     IntPtr ptr3 = SafeNativeMethods.Gdip.ConvertPointToMemory(destPoints);
     GPRECTF gprectf = new GPRECTF(srcRect);
     int status = SafeNativeMethods.Gdip.GdipEnumerateMetafileSrcRectDestPoints(new HandleRef(this, this.NativeGraphics), new HandleRef(metafile, handle), ptr3, destPoints.Length, ref gprectf, (int) unit, callback, new HandleRef(null, callbackData), new HandleRef(imageAttr, ptr2));
     Marshal.FreeHGlobal(ptr3);
     if (status != 0)
     {
         throw SafeNativeMethods.Gdip.StatusException(status);
     }
 }

	public void EnumerateMetafile(System.Drawing.Imaging.Metafile metafile, Point[] destPoints, EnumerateMetafileProc callback, System.IntPtr callbackData, System.Drawing.Imaging.ImageAttributes imageAttr) {}

 public void EnumerateMetafile(Metafile metafile, PointF[] destPoints,
                               RectangleF srcRect, GraphicsUnit srcUnit,
                               EnumerateMetafileProc callback) {
     EnumerateMetafile(metafile, destPoints, srcRect, srcUnit, callback, IntPtr.Zero);
 }

		public void EnumerateMetafile (Metafile metafile, Rectangle destRect, EnumerateMetafileProc callback, IntPtr callbackData, ImageAttributes imageAttr)
		{
			throw new NotImplementedException ();
		}