Motif L&F cancel JPopupMenu missing listener

Question

Hi all,
I have a JButton and a JPopupMenu
I would like to show JPopupMenu when JButton is pressed
popupMenu.addPopupMenuListener(new PopupMenuListener() {
public void popupMenuWillBecomeVisible(PopupMenuEvent event) {
System.out.println("Visible");
public void popupMenuWillBecomeInvisible(PopupMenuEvent event) {
System.out.println("Invisible");
public void popupMenuCanceled(PopupMenuEvent event) {
System.out.println("Canceled");
button.addMouseListener(new MouseAdapter(){
public void mousePressed(MouseEvent event) {
System.out.println("Pressed");
if (match some condition) {
popupMenu.show(button, 0, button.getHeight());
When I haven't change the L&F
The output is correct:
// First time of pressing the button
Pressed
Visible// Second time of pressing the button
Canceled
Invisible
Pressed
Visible ...The problem is when I using Motif L&F
The "Pressed" is missing and need to perform one more click
// First time of pressing the button
Pressed
Visible// Second time of pressing the button
Canceled
Invisible// Third time of pressing the button
Pressed
Visible ...My program will change L&F at runtime and I would like to provide same behaviour of the popup.
Could anyone tell me how to provide same behaviour even at Motif L&F?
Thank you very much
Roy

Answer 1

I don't think that changing L&F might change behavior of firing events.
Maybe the problem is somewhere in your code...
Maybe you set different values of some variables before changing L&F, then you change L&F and then it doesn't work as you want. It seems to you that the problem is in L&F, but I don't think so.
Take a look at your code again and try to find a bug there, not in L&F.