Greetings!

Please take a look onto following code.
Questions:
Why don't I get any mouse event?
While clicking onto the arrow to open the box, I want to load/change the
contend of the box. Doing this in popupMenuBevomeVisible - one of the
few events I get - is too late. Is there any event to receive to
populate the box after clicking the button?

Thanks

Michael

import javax.swing.*;
import javax.swing.event.*;
import java.awt.event.*;

@SuppressWarnings("serial")
public class TestForm extends JFrame
implements PopupMenuListener, ActionListener, MouseListener,
AncestorListener, MouseMotionListener {

    public TestForm (){
        super("Test");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JComboBox combo = new JComboBox();
        combo.setEditable(true);
        combo.addItem("Test1");
        combo.addItem("Test2");
        combo.addPopupMenuListener(this);
        combo.addMouseListener(this);
        combo.addActionListener(this);
        combo.addAncestorListener(this);
        combo.addMouseMotionListener(this);
        this.add(combo);
    }

    public static void main(String[] args) {
        // TODO Auto-generated method stub
       TestForm frame = new TestForm();
       frame.setLocation(700, 500);
       frame.pack();
       frame.setVisible(true);
        new TestForm();
    }
    public void popupMenuWillBecomeVisible(PopupMenuEvent arg0) {
        System.out.println("popupMenuWillBecomeVisible");
    }
    public void popupMenuWillBecomeInvisible(PopupMenuEvent arg0) {
        System.out.println("popupMenuWillBecomeInvisible");
    }
    public void popupMenuCanceled(PopupMenuEvent arg0) {
        System.out.println("popupMenuCanceled");
    }
    public void actionPerformed(ActionEvent arg0) {
        System.out.println("actionPerformed");
    }
    public void mouseClicked(MouseEvent arg0) {
        System.out.println("mouseClicked");
    }
    public void mousePressed(MouseEvent arg0) {
        System.out.println("mousePressed");
    }
    public void mouseReleased(MouseEvent arg0) {
        System.out.println("mouseReleased");
    }
    public void mouseEntered(MouseEvent arg0) {
        System.out.println("mouseEntered");
    }
    public void mouseExited(MouseEvent arg0) {
        System.out.println("mouseExited");
    }
    public void ancestorAdded(AncestorEvent arg0) {
        System.out.println("popupMenuWillBecomeInvisible");
    }
    public void ancestorRemoved(AncestorEvent arg0) {
        System.out.println("popupMenuWillBecomeInvisible");
    }
    public void ancestorMoved(AncestorEvent arg0) {
        System.out.println("ancestorMoved");
    }
    public void mouseDragged(MouseEvent arg0) {
        System.out.println("mouseDragged");
    }
    public void mouseMoved(MouseEvent arg0) {
        System.out.println("mouseMoved");
    }
}