Run the following program and do the following steps (note: this problem seems to only exist on Solaris. The same scenario doesn't seem to happen on Windows):

1) Click on one of the JMenus so that it drops down a list of JMenuItems
2) Using the arrow keys, try to move to the next JMenu or down to one of the JMenuItems. It won't work.
3) Now make the JFrame that the JMenu is contained in bigger by expanding it so that the drop down list will completely fit inside of it when it's dropped down. Navigating via the arrow keys will work.

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

public class JMenuItemTest extends JFrame {
    private JMenuBar menuBar;
    private JMenu menu, menu2;
    private JMenuItem menuItem, menuItem1, menuItem2, menuItem3;

    public static void main(String[] args) {
        new JMenuItemTest();
    }

    public JMenuItemTest() {
        menuBar = new JMenuBar();
        menu = new JMenu("Stuff");
        menu2 = new JMenu("More Stuff");
        menuItem = new JMenuItem("Hello");
        menuItem1 = new JMenuItem("World");
        menuItem2 = new JMenuItem("Greetings");
        menuItem3 = new JMenuItem("There");

        menu.add(menuItem);
        menu.add(menuItem1);
        menu2.add(menuItem2);
        menu2.add(menuItem3);

        menuBar.add(menu);
        menuBar.add(menu2);

        setJMenuBar(menuBar);

        pack();
// setSize(300, 300);
        show();
    }
}

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edmund.lou@eng 2001-01-23
Swing Test Development
====================================


Correction, something similar happens on Windows, but it's the complete opposite of producing it on Solaris. Here are the steps when running in Windows:

1) Run the above program.
2) Click on one of the JMenus.
3) At this point, you can navigate around using the arrow keys.
4) Now, make the JFrame bigger by dragging a corner.
5) Click on one of the JMenus. Now you no longer navigate using the arrow keys just like the problem in the Solaris scenario except Solaris won't allow you to do it initially. Windows will except when you expand the JFrame, then you cannot. Strange bug. I reproduced this on WindowsNT.

edmund.lou@eng 2001-01-23
Swing Test Development
====================================