IntPtr LoadFromStream (System.IO.Stream input)
		{
			PixbufLoader loader = new PixbufLoader ();
			byte [] buffer = new byte [8192];
		
			int n;
		
			while ((n = input.Read (buffer, 0, 8192)) != 0)
				loader.Write (buffer, (uint) n);
			loader.Close ();
		
			return loader.Pixbuf.Handle;
		}
		
		public Pixbuf (System.IO.Stream input)
		{
			Raw = LoadFromStream (input);
		}
		
		public Pixbuf (System.Reflection.Assembly assembly, string resource)
		{
			if (assembly == null)
				assembly = System.Reflection.Assembly.GetCallingAssembly ();
		
			System.IO.Stream s;
			Pixbuf p = null;
			using (s = assembly.GetManifestResourceStream (resource))
				Raw = LoadFromStream (s);
		}

		// scale_simple, composite_color_simple, and addalpha do a gdk_pixbuf_new on the
		// return first, and we also ref it
		// in the GetObject.  So get rid of one extra reference.

		
		[DllImport("gdk_pixbuf-2.0")]
		static extern IntPtr gdk_pixbuf_scale_simple(IntPtr raw, int dest_width, int dest_height, int interp_type);

		public Gdk.Pixbuf ScaleSimple(int dest_width, int dest_height, Gdk.InterpType interp_type) {
			IntPtr raw_ret = gdk_pixbuf_scale_simple(Handle, dest_width, dest_height, (int) interp_type);
			Gdk.Pixbuf ret = (Gdk.Pixbuf) GLib.Object.GetObject(raw_ret);
			ret.Unref ();
			return ret;
		}

		[DllImport("gdk_pixbuf-2.0")]
		static extern IntPtr gdk_pixbuf_composite_color_simple(IntPtr raw, int dest_width, int dest_height, int interp_type, int overall_alpha, int check_size, uint color1, uint color2);

		public Gdk.Pixbuf CompositeColorSimple(int dest_width, int dest_height, Gdk.InterpType interp_type, int overall_alpha, int check_size, uint color1, uint color2) {
			IntPtr raw_ret = gdk_pixbuf_composite_color_simple(Handle, dest_width, dest_height, (int) interp_type, overall_alpha, check_size, color1, color2);
			Gdk.Pixbuf ret = (Gdk.Pixbuf) GLib.Object.GetObject(raw_ret);
			ret.Unref ();
			return ret;
		}

		[DllImport("gdk_pixbuf-2.0")]
		static extern IntPtr gdk_pixbuf_add_alpha(IntPtr raw, bool substitute_color, byte r, byte g, byte b);

		public Gdk.Pixbuf AddAlpha(bool substitute_color, byte r, byte g, byte b) {
			IntPtr raw_ret = gdk_pixbuf_add_alpha(Handle, substitute_color, r, g, b);
			Gdk.Pixbuf ret = (Gdk.Pixbuf) GLib.Object.GetObject(raw_ret);
			ret.Unref ();
			return ret;
		}