public Metafile(string fileName, IntPtr referenceHdc, Rectangle frameRect, MetafileFrameUnit frameUnit, EmfType type, string description)
 {
     int num;
     System.Drawing.IntSecurity.DemandReadFileIO(fileName);
     System.Drawing.IntSecurity.ObjectFromWin32Handle.Demand();
     IntPtr zero = IntPtr.Zero;
     if (frameRect.IsEmpty)
     {
         num = SafeNativeMethods.Gdip.GdipRecordMetafileFileName(fileName, new HandleRef(null, referenceHdc), (int) type, System.Drawing.NativeMethods.NullHandleRef, (int) frameUnit, description, out zero);
     }
     else
     {
         GPRECT gprect = new GPRECT(frameRect);
         num = SafeNativeMethods.Gdip.GdipRecordMetafileFileNameI(fileName, new HandleRef(null, referenceHdc), (int) type, ref gprect, (int) frameUnit, description, out zero);
     }
     if (num != 0)
     {
         throw SafeNativeMethods.Gdip.StatusException(num);
     }
     base.SetNativeImage(zero);
 }

		static internal extern Status GdipRecordMetafileFromDelegateI_linux (StreamGetHeaderDelegate getHeader, 
			StreamGetBytesDelegate getBytes, StreamPutBytesDelegate putBytes, StreamSeekDelegate doSeek, 
			StreamCloseDelegate close, StreamSizeDelegate size, IntPtr hdc, EmfType type, ref Rectangle frameRect, 
			MetafileFrameUnit frameUnit, [MarshalAs (UnmanagedType.LPWStr)] string description, out IntPtr metafile);

		public Metafile (string fileName, IntPtr referenceHdc, RectangleF frameRect, MetafileFrameUnit frameUnit,
			EmfType type) : this (fileName, referenceHdc, frameRect, frameUnit, type, null)
		{
		}

	public Metafile(string fileName, System.IntPtr referenceHdc, System.Drawing.Rectangle frameRect, MetafileFrameUnit frameUnit, string description) {}

	public Metafile(String fileName, IntPtr referenceHdc,
					Rectangle frameRect, MetafileFrameUnit frameUnit,
					EmfType type, String description)
			{
				// TODO
			}

		public Metafile (string fileName, IntPtr referenceHdc, RectangleF frameRect, MetafileFrameUnit frameUnit, EmfType type,
															string description) 
		{
			throw new NotImplementedException ();
		}

		private void RecordFileName (IntPtr hdc, EmfType type, MetafileFrameUnit unit)
		{
			string filename = String.Format ("test-{0}-{1}.emf", type, unit);
			IntPtr metafile;
			RectangleF rect = new RectangleF (10, 20, 100, 200);
			Status status = GDIPlus.GdipRecordMetafileFileName (filename, hdc, type, ref rect, unit, filename, out metafile);
			if (metafile != IntPtr.Zero)
				GDIPlus.GdipDisposeImage (metafile);
			if (status == Status.Ok)
				File.Delete (filename);
			Assert.AreEqual (Status.Ok, status, filename);
		}

		private Status RecordFileName_EmptyRectangle (IntPtr hdc, MetafileFrameUnit unit)
		{
			string filename = String.Format ("emptyrectangle-{0}.emf", unit);
			IntPtr metafile = IntPtr.Zero;
			RectangleF empty = new RectangleF ();
			Status status = GDIPlus.GdipRecordMetafileFileName (filename, hdc, EmfType.EmfPlusDual, ref empty, unit, filename, out metafile);
			if (metafile != IntPtr.Zero)
				GDIPlus.GdipDisposeImage (metafile);
			if (status == Status.Ok)
				File.Delete (filename);
			return status;
		}

        public Metafile(string fileName, IntPtr referenceHdc, RectangleF frameRect,
                        MetafileFrameUnit frameUnit, EmfType type, String description)
        {
            IntSecurity.DemandReadFileIO(fileName);
            IntSecurity.ObjectFromWin32Handle.Demand();

            IntPtr metafile = IntPtr.Zero;

            GPRECTF rectf = new GPRECTF(frameRect);
            int status = SafeNativeMethods.Gdip.GdipRecordMetafileFileName(fileName, 
                                                            new HandleRef(null, referenceHdc), 
                                                            unchecked((int)type), 
                                                            ref rectf,
                                                            unchecked((int)frameUnit), 
                                                            description, 
                                                            out metafile);

            if (status != SafeNativeMethods.Gdip.Ok)
                throw SafeNativeMethods.Gdip.StatusException(status);

            SetNativeImage(metafile);
        }

		internal static extern Status GdipRecordMetafileFileNameI ([MarshalAs (UnmanagedType.LPWStr)] string filename, IntPtr hdc, EmfType type,
			ref Rectangle frameRect, MetafileFrameUnit frameUnit, [MarshalAs (UnmanagedType.LPWStr)] string description, out IntPtr metafile);

		internal static extern Status GdipRecordMetafileStreamI ([MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef=typeof(ComIStreamMarshaler))] IStream stream, IntPtr hdc, 
			EmfType type, ref Rectangle frameRect, MetafileFrameUnit frameUnit, [MarshalAs (UnmanagedType.LPWStr)] string description, out IntPtr metafile);

		public Metafile(System.IO.Stream stream, System.IntPtr ptr, Drawing.RectangleF rect, MetafileFrameUnit unit)
		{
			
			throw new NotImplementedException();
		}