🚀 go-pugleaf

Hi
I  have a jpopupmenu on the right click of the mouse.
The popupmenu has a number it JMenuItem's.
I would like one to be a JMenu where when the mouse mouse over this menu 
  a combobox pops up. This is similar to a submenu, but instead of the 
submenus being several JMenuItem I want it to be one jcombobox with 
several items in it.

I have tried to play around with BasicComboPopup but it doesn't do what 
I want it to do

Here is the code

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.plaf.basic.*;
public class ComboBoxPopupMenuDemo extends JPanel
{
   BasicComboPopup myPopup;
   JComboBox petList;
   JPopupMenu menu=new JPopupMenu();
   public ComboBoxPopupMenuDemo()
   {
     super(new BorderLayout());
     String[] petStrings = { "Bird", "Cat", "Dog", "Rabbit", "Pig", 
"Fish", "Horse", "Cow", "Bee", "Skunk" };
     petList = new JComboBox(petStrings);
       myPopup=new BasicComboPopup(petList);
       final JLabel lab=new JLabel(" ");
       lab.addMouseListener(new MouseAdapter()
       {
         public void mouseClicked(MouseEvent e)
         {
           menu.add(myPopup);
          // menu.add(new JMenuItem("Test"));
           menu.show(lab,e.getX(),e.getY());
         }
       });
       add("Center",lab);
       setPreferredSize(new Dimension(200,100));
     }
     public static void main(String s[])
     {
       JFrame frame = new JFrame("ComboBoxDemo");
       frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
       frame.setContentPane(new ComboBoxPopupMenuDemo());
       frame.pack();
       frame.setVisible(true);
     }
   }

Any ideas