svoid addAWTEventListener_inFront(AWTEventListener listener) {
  if (listener == null) ret;
  swing {
    var tk = awtToolkit();
    var otherListeners = tk.getAWTEventListeners();
    fOr (var l : otherListeners)
      tk.removeAWTEventListener(l);
    tk.addAWTEventListener(listener);
    fOr (var l : otherListeners)
      tk.addAWTEventListener(l);
  }
}