How to know if MouseWheelListener can receive events?

Question

There is one JPanel with attached MouseWheelListener. This panel has on top several other JPanels, and completely occupies parent JPanel area. I want to know if MouseWheelListener can receive events when the mouse is over this parent JPanel. If I attach MouseListener to parent JPanel - it is not receiving any events, because on top of it there are several other JPanels.

Maybe there is some method to find out when MouseWheelListener can receive events? I mean like if you standing on JScrollPane - only then you can move the scrollbar (and it is not important how many JPanels on it).

EDIT:

The AWTEventListener didn't helped also - the 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;
                for (Component c : getComponents()) {//get all parent JPanel components
                    if (event.getComponent().equals(c)) {
                        active = true;
                        scrollBar.repaint();
                        break;
                    }
                }
            } else if (MouseEvent.MOUSE_EXITED == e.getID()) {
                MouseEvent event = (MouseEvent) e;
                for (Component c : getComponents()) {
                    if (event.getComponent().equals(c)) {
                        active = false;
                        scrollBar.repaint();
                        break;
                    }
                }
            }
        }
    };

    Toolkit.getDefaultToolkit().addAWTEventListener(awt, AWTEvent.MOUSE_EVENT_MASK);

Perhaps it is impossible to achieve that..