GtkSharp/gtk/SelectionData.custom

		[DllImport("gtk-x11-2.0")]
		private static extern string gtk_selection_data_get_text (ref Gtk.SelectionData selection_data);

		[DllImport("gtk-x11-2.0")]
		private static extern void gtk_selection_data_set_text (ref Gtk.SelectionData selection_data, string str, int len);

		public string Text {
			get {
				return gtk_selection_data_get_text (ref this);
			}
			set {
				gtk_selection_data_set_text (ref this, value, value.Length);
			}
		}

		[DllImport("gtk-x11-2.0")]
		static extern void gtk_selection_data_set (ref Gtk.SelectionData raw, IntPtr type, int format, byte[] data, int length);

		public byte[] Data {
			get {
				byte[] ret = new byte[length];
				Marshal.Copy (_data, ret, 0, length);
				return ret;
			}
			set {
				gtk_selection_data_set (ref this, _type, format, value, value.Length);
			}
		}