How to trap right-click + control using masks? I tried but it doesn't work. If I replace BUTTON3_DOWN_MASK to BUTTON1_DOWN_MASK or BUTTON2_DOWN_MASK, it works. Why? I don't understand. @.@
Thank you.

Code:
public class FrameTest extends JFrame {
	public FrameTest()
	{
		setSize(500, 500);
		setLocation(300, 200);
		setVisible(true);
		setFocusable(true);
		
		addMouseListener(new MouseAdapter()
		{			
			public void mousePressed(MouseEvent e) {
				int mask = MouseEvent.CTRL_DOWN_MASK | MouseEvent.BUTTON3_DOWN_MASK;
				if((e.getModifiersEx() & mask) == mask)
				{
					JOptionPane.showMessageDialog(null, "Ku");
				}
			}
		});
	}
	
	public static void main(String[] args) {
		FrameTest app = new FrameTest();
		app.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}
}