private void ExcepcionDesconocida(GLib.UnhandledExceptionArgs e)
{
#if DEBUG
Console.WriteLine(e.ToString());
#endif
Dialog dialog = new Dialog("Excepcion", this, Gtk.DialogFlags.DestroyWithParent);
dialog.Modal = true;
dialog.Resizable = false;
Gtk.Label etiqueta = new Gtk.Label();
etiqueta.Markup = "Ha ocurrido un error.";
dialog.BorderWidth = 8;
dialog.VBox.BorderWidth = 8;
dialog.VBox.PackStart(etiqueta, false, false, 0);
dialog.AddButton ("Cerrar", ResponseType.Close);
dialog.ShowAll();
dialog.Run ();
dialog.Destroy ();
}