JComboBox.setLightWeightPopupEnabled() is supposed to allow a program to
instruct the combobox whether or not lightweight popups should be used.
This doesn't seem to work at all, ast he program below demonstrates:

import java.awt.*;
import com.sun.java.swing.*;

public class Test extends JFrame {

    public Test() {
       super("Mix Popup Test");

       Box box = Box.createVerticalBox();
       getContentPane().add("Center", box);

       // Create Lightweight Swing ComboBox
       JComboBox light = new JComboBox();
       light.setLightWeightPopupEnabled(false);
       light.addItem("Apple ");
       light.addItem("Plum ");
       light.addItem("Banana ");
       light.addItem("Cherry ");

       // Create Heavyweight AWT Button
       Button heavy = new Button("Heavyweight Button");

       // Add light & heavy components to box
       box.add(Box.createVerticalStrut(40));
       box.add(light);
       box.add(Box.createVerticalStrut(20));
       box.add(heavy);
       box.add(Box.createVerticalStrut(40));

       pack();
    }
    public static void main(String[] args) {
        Test t = new Test();
        t.show();
    }
}


erik.larsen@Eng 1998-06-09
webbug from ###@###.###

JPopupMenu.setLightWeightPopupEnabled(false) does not work on Solaris. Popup menus are obscured by heavyweight components even when lightweight menus are turned off. Under WinNT4, it works. It fails under Solaris.

import java.awt.*;
import com.sun.java.swing.*;
public class MenuBug extends JFrame {
public static void main(String args[]) {
new MenuBug().setVisible(true);
}
public MenuBug() {
getContentPane().add(new Canvas(), BorderLayout.CENTER);

JMenuBar jcMenubar = new JMenuBar();
JMenu jcMenu = new JMenu("File");
jcMenu.getPopupMenu().setLightWeightPopupEnabled(false);
jcMenu.add(new JMenuItem("Item 1"));
jcMenu.add(new JMenuItem("Item 2"));
jcMenu.add(new JMenuItem("Item 3"));
jcMenu.add(new JMenuItem("Item 4"));
jcMenubar.add(jcMenu);

setJMenuBar(jcMenubar);

setSize(300, 300);
}
}