/* Code from Gnome-Do */
    private static bool try_grab_window (Gtk.Window window)
    {
      uint time = Gtk.get_current_event_time();
      if (Gdk.pointer_grab (window.get_window(),
            true,
            Gdk.EventMask.BUTTON_PRESS_MASK |
            Gdk.EventMask.BUTTON_RELEASE_MASK |
            Gdk.EventMask.POINTER_MOTION_MASK,
            null,
            null,
            time) == Gdk.GrabStatus.SUCCESS)
      {
        if (Gdk.keyboard_grab (window.get_window(), true, time) == Gdk.GrabStatus.SUCCESS) {
          Gtk.grab_add (window);
          return true;
        } else {
          Gdk.pointer_ungrab (time);
          return false;
        }
      }
      return false;
    }