Invisible menu bar in java apps #192
Description
When running the example from http://alvinalexander.com/java/java-menubar-example-jmenubar-jframe in a rootless x2go session the window gets shown but the menu bar is not visible until the window is moved or resized. This happens (for me) in about 85% of all starts. It does not happen with all window managers since some of them take care of placing the window and this seems to trigger a event for the example program so that the window gets repainted. I was able to see this in Unity and sometimes kwin.
How to reproduce:
- save this stripped down version of the example somewhere:
import java.awt.*;
import javax.swing.*;
public class JavaMenuBarExample implements Runnable
{
private JFrame frame;
private JMenuBar menuBar;
private JMenu fileMenu;
public static void main(String[] args)
{
SwingUtilities.invokeLater(new JavaMenuBarExample());
}
public void run()
{
frame = new JFrame("Java Menubar Example");
menuBar = new JMenuBar();
fileMenu = new JMenu("File");
menuBar.add(fileMenu);
frame.setJMenuBar(menuBar);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setPreferredSize(new Dimension(400, 300));
frame.pack();
frame.setVisible(true);
}
}
- compile it:
> javac JavaMenuBarExample.java
-
open an x2go rootless session (x2go: session type: application, command: /usr/bin/xterm)
-
run the example from the xterm:
> java JavaMenuBarExample-> menu bar is missing:
-
move the example window -> menu bar appears:
