JFrame frame = new JFrame("GlassPaneDemo");
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
JCheckBox changeButton =
new JCheckBox("Glass pane \"visible\"");
changeButton.setSelected(false);
changeButton.addItemListener(new ItemListener() {
public void itemStateChanged(ItemEvent e) {
myGlassPane.setVisible(e.getStateChange()
== ItemEvent.SELECTED);
}
});
//Set up the content pane, where the "main GUI" lives.
Container contentPane = frame.getContentPane();
contentPane.setLayout(new FlowLayout());
contentPane.add(changeButton);
contentPane.add(new JButton("Button 1"));
contentPane.add(new JButton("Button 2"));
//Set up the menu bar, which appears above the content pane.
JMenuBar menuBar = new JMenuBar();
JMenu menu = new JMenu("Menu");
menu.add(new JMenuItem("Do nothing"));
menuBar.add(menu);
frame.setJMenuBar(menuBar);
//Set up the glass pane, which appears over both menu bar
//and content pane.
myGlassPane = new MyGlassPane(changeButton, menuBar,
frame.getContentPane());
frame.setGlassPane(myGlassPane);
frame.pack();
frame.setVisible(true);
