java - How to know if MouseWheelListener can receive events? -

there 1 jpanel attached mousewheellistener. panel has on top several other jpanels, , occupies parent jpanel area. want know if mousewheellistener can receive events when mouse on parent jpanel. if attach mouselistener parent jpanel - not receiving events, because on top of there several other jpanels.

maybe there method find out when mousewheellistener can receive events? mean if standing on jscrollpane - can move scrollbar (and not important how many jpanels on it).

edit:

the awteventlistener didn't helped - upper jpanels still blocking parent jpanel events.. :

awteventlistener awt = new awteventlistener() {          @override         public void eventdispatched(awtevent e) {              if (mouseevent.mouse_entered == e.getid()) {                 mouseevent event = (mouseevent) e;                 (component c : getcomponents()) {//get parent jpanel components                     if (event.getcomponent().equals(c)) {                         active = true;                         scrollbar.repaint();                         break;                     }                 }             } else if (mouseevent.mouse_exited == e.getid()) {                 mouseevent event = (mouseevent) e;                 (component c : getcomponents()) {                     if (event.getcomponent().equals(c)) {                         active = false;                         scrollbar.repaint();                         break;                     }                 }             }         }     };      toolkit.getdefaulttoolkit().addawteventlistener(awt, awtevent.mouse_event_mask); 

perhaps impossible achieve that..