JWindow never receives focus events

I have a jwindow (set always on top) that you can click to get a pop menu. If the user right-clicks on the window, the popup menu will appear, but if the user clicks on any other window (like firefox), the pop pop menu will not disappear.

I tried to fix it by adding FocusListener to jwindow, I implemented FocusListener and override

    public void focusGained(FocusEvent e) {
    System.out.println("gain" );
    }

    public void focusLost(FocusEvent e) {
    System.out.println("lost" );
    }

      

        
        
        
      

    

but events are never called. I have also tried the following,

    addWindowFocusListener(new WindowAdapter() {
        public void windowGainedFocus(WindowEvent e) {
            System.out.println("gain 2" );
        }
        });

      

        
        
        
      

    

this event is not fired either.

All these jwindows have one JLabel with an image on it.