About AWT List

[amitpathak]

Hello

I am trying to attach a pop up menu in List
That is going fine
But I donno why for some area it is showing and for another it is not
Please help me.

[JosAH]

Hello

I am trying to attach a pop up menu in List
That is going fine
But I donno why for some area it is showing and for another it is not
Please help me.

Can you show us some snippets of (relevant) code please?

kind regards,

Jos

[amitpathak]

Can you show us some snippets of (relevant) code please?

kind regards,

Jos

// Copyright (c) 2007 Ericsson AB. All rights reserved.

package testpackage;

import java.awt.Color;
import java.awt.GridLayout;
import java.awt.List;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenuItem;
import javax.swing.JPopupMenu;
import javax.swing.JTextArea;

public class CTestClass implements ActionListener
{
private JFrame frame;
private JTextArea area;
private JLabel label;
private List wordList;
public static JPopupMenu popup;

public CTestClass()
{
frame = new JFrame("popup menu");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOS E);
frame.getContentPane().setLayout(new GridLayout(3, 1));

area = new JTextArea();
label = new JLabel("Sample");
wordList = new List();

popup = new JPopupMenu();
JMenuItem menuItem = new JMenuItem("A popup menu item");
menuItem.addActionListener(this);
popup.add(menuItem);
menuItem = new JMenuItem("Another popup menu item");
menuItem.addActionListener(this);
popup.add(menuItem);

// Add listener to components that can bring up popup menus.
MouseListener popupListener = new PopupListener();
area.addMouseListener(popupListener);
wordList.addMouseListener(popupListener);
frame.getContentPane().add(area);
frame.getContentPane().add(label);
System.out.print(popup.getForeground());

frame.getContentPane().add(wordList);
frame.setSize(400, 300);
frame.setVisible(true);

}

public void actionPerformed(ActionEvent e)
{

}

public static void main(String[] args)
{
new CTestClass();
}
}

class PopupListener extends MouseAdapter
{
public void mousePressed(MouseEvent e)
{
maybeShowPopup(e);
}

public void mouseReleased(MouseEvent e)
{
maybeShowPopup(e);
}

private void maybeShowPopup(MouseEvent e)
{
if (e.isPopupTrigger())
{
CTestClass.popup.show(e.getComponent(), e.getX(), e.getY());
}
}
}

If you run this program in any editor like eclipse
It will create frame in which there are 3 rows and 1 column
0,0 -> TEXTAREA
1,0 -> LABEL
2,0 -> List

I have attached popuplistener to TEXTAREA and LIST
Now when you right click at any plcae within TEXTAREA it is working fine
but try the same in LIST you will know the problem

Thanks

[JosAH]

You're mixing AWT objects with Swing objects; the two don't go well together,
i.e. the AWT objects are 'heavyweight', they use the system's windowing objects.
Swing doesn't so AWT doesn't know about the Swing objects and vice versa.

I suggest you'd use a JList instead (and none of the other AWT components).

kind regards,

Jos

[amitpathak]

You're mixing AWT objects with Swing objects; the two don't go well together,
i.e. the AWT objects are 'heavyweight', they use the system's windowing objects.
Swing doesn't so AWT doesn't know about the Swing objects and vice versa.

I suggest you'd use a JList instead (and none of the other AWT components).

kind regards,

Jos

Thanks Jos
You got the problem
Now I used JList and the problem is Solved

[JosAH]

Thanks Jos
You got the problem
Now I used JList and the problem is Solved

You're welcome of course; mixing AWT and Swing components is a frequent
mistake; it can be a bit confusing when you just read the class documentation.

kind regards,

Jos