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Message: [QUOTE="ub, post: 2847175"] I have a JFrame that displays a big JLabel in the background and a JCheckBox in the front. When using the Windows L&F and I press the Alt-key the JLabel is repainted but not the JCheckBox in front of it. As a consequence the checkbox disappears. Forcing a repaint (e.g. by resizing the frame) will make the checkbox re-appear. When not using the Window L&F everything is fine. Any suggestion how to work around this problem? ub Here the sourcecode: ----- import java.awt.Color; import javax.swing.JCheckBox; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.UnsupportedLookAndFeelException; public class AltKeyRepaint { public static void main(String args[]) throws ClassNotFoundException, InstantiationException, IllegalAccessException, UnsupportedLookAndFeelException { // Use the System (i.e. "Windows") L&F javax.swing.UIManager.setLookAndFeel(javax.swing.UIManager .getSystemLookAndFeelClassName()); // The frame to display the sample JFrame frame = new JFrame("Frame"); frame.setSize(250, 200); frame.getContentPane().setLayout(null); // A big colored label in the background JLabel label = new JLabel("A sample label in the background"); label.setBackground(Color.ORANGE); label.setOpaque(true); label.setBounds(5, 5, 200, 150); // A check box on top of the background label JCheckBox chkBox = new JCheckBox("a check box on top"); chkBox.setBounds(30, 30, 150, 20); // Add the label and check box to the frame frame.getContentPane().add(chkBox); frame.getContentPane().add(label); // display it frame.show(); // Now pressing the ALT key will repaint the label, but not the // check box, i.e. the check box disappears. // Forcing a repaint (e.g. by resizing the frame) will make the check // box re-appear. // Without the Windows L&F (first statement of function) everything // will be fine. } } [/QUOTE]

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