java - Passing mouse events from Jframe glass to menu bar? -

based on previous stack questions have written following code capture mouse input glass pane push series of panels underneath.

 mousemotionlistener mml = new mousemotionlistener() {   private void dispatchmouseevent(mouseevent e) {        point glasspanepoint = e.getpoint();       container container = jf.getcontentpane();       point containerpoint = swingutilities.convertpoint(               glass, glasspanepoint, container);       if (containerpoint.y >= 0) {           (component ml : mouselisteners) {               point componentpoint = swingutilities                       .convertpoint( glass, glasspanepoint, ml);               ml.dispatchevent(new mouseevent(ml, e.getid(),                        e.getwhen(), e.getmodifiers(),                       componentpoint.x, componentpoint.y,                       e.getclickcount(), e.ispopuptrigger()));           }       }   }   @override   public void mousedragged(mouseevent me) {       dispatchmouseevent(me);   }    @override   public void mousemoved(mouseevent me) {       dispatchmouseevent(me);   } }; glass.addmousemotionlistener(mml); 

but of tutorials can find when comes menu bar.

if (containerpoint.y < 0) { //we're not in content pane         if (containerpoint.y + menubar.getheight() >= 0) {              //the mouse event on menu bar.             //could handle specially.         } else {              //the mouse event on non-system window              //decorations, such ones provided             //the java , feel.             //could handle specially.         } 

could point me somewhere can see how handle specifically? thanks.