@Override
 public void modalEnable(Dialog blocker) {
   super.modalEnable(blocker);
   ((EmbeddedFrame) target).notifyModalBlocked(blocker, false);
 }
 @Override
 public void modalDisable(Dialog blocker, long blockerHWnd) {
   super.modalDisable(blocker, blockerHWnd);
   ((EmbeddedFrame) target).notifyModalBlocked(blocker, true);
 }