JMenu closes after checking/unchecking JCheckBoxMenuItems

> but I have actually heard that it's possible

Of course anything is possible components behave the way they do because somebody coded it to do that. So you can obviously write your own code to have it do what you want. Thats why I said you need to write your own UI. There is no simple boolean variable like "keep popup open until I say so" that you can set.

You need to look at and rewrite the UI. Somewhere in the code a MouseListener will be added to the menu item so that when its clicked the items ActionListner is invoked and the popup is closed. You will need to change that behaviour and create you own custom component.

This question has been asked before in the forum. So maybe if you search the forum you can find the other postings. Maybe they will be more helpfull, but I doubt it.

camickra at 2007-7-12 18:29:22 >

> I add a MouseListener to my JCheckBoxMenuItem.

Maybe it would work but the MouseLIstener added by the UI is still there, so maybe it probably executes after your MouseListener. I would guess you need to remove the listener first, that why I say you need to change the UI and I'm not about to look at the code to see where it is done.

> What would u suggest?

A different design. Like poping up a "Properties Window" and allow the use to select all the items they want and then close the window.

Or, maybe instead of adding individual menu items to the menu you add a JPopupMenu to the menu that contains your menu items. I'm guessing the popup won't close. That what the first posting suggested you use a JPopupMenu.

But I don't have a solution.

camickra at 2007-7-12 18:29:22 >

Hi, yes actually it is urgent. I'm doing this for work and it took me two days becuz it was the weekend and I didn't have access to code.

Anyways, I just created this SSCCE, as you had advised. As far as instructions are concerned, after launching the application, you need to right click on the JFrame and go from there. You will see that after selecting/unselecting one of the JCheckBoxMenuItems it goes behind the frame. I'm sorry if my instructions are confusing, all you need to do is right-click on the frame and you'll see what I'm talking about.

import java.awt.Point;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

import javax.swing.JButton;

import javax.swing.JCheckBoxMenuItem;

import javax.swing.JFrame;

import javax.swing.JMenu;

import javax.swing.JPopupMenu;

import javax.swing.SwingUtilities;

public class MyPopupTest {

/**

* @param args

*/

public static void main(String[] args) {

// TODO Auto-generated method stub

final JFrame frame = new JFrame("My Frame");

frame.setSize(500,500);

final JPopupMenu mainPopup = new JPopupMenu();

final JMenu myMenu = new JMenu("My Menu");

final JPopupMenu itemsPopupMenu = new JPopupMenu();

JButton okButton = new JButton("OK");

JCheckBoxMenuItem item1 = new JCheckBoxMenuItem("item1", true);

JCheckBoxMenuItem item2 = new JCheckBoxMenuItem("item2", false);

JCheckBoxMenuItem item3 = new JCheckBoxMenuItem("item3", false);

frame.getContentPane().add(mainPopup);

mainPopup.add(myMenu);

myMenu.add(itemsPopupMenu);

itemsPopupMenu.add(item1);

itemsPopupMenu.add(item2);

itemsPopupMenu.add(item3);

itemsPopupMenu.add(okButton);

okButton.addMouseListener(new MouseAdapter()

{

public void mousePressed(MouseEvent e)

{

itemsPopupMenu.setVisible(false);

myMenu.setVisible(false);

}

});

myMenu.addMouseListener(new MouseAdapter()

{

public void mouseClicked(MouseEvent e)

{

if(SwingUtilities.isRightMouseButton(e))

{

mainPopup.setLocation(e.getPoint());

mainPopup.setVisible(true);

}

}

public void mouseEntered(MouseEvent e)

{

itemsPopupMenu.setLocation(new Point(myMenu.getLocationOnScreen().x + mainPopup.getWidth(),myMenu.getLocationOnScreen().y));

itemsPopupMenu.setVisible(true);

}

});

frame.setVisible(true);

}

}

programmer_girla at 2007-7-12 18:29:22 >