JTextField uneditable in JWindow

Question

I have a Jwindow, and when I added a Jtextfield to it, the textfield became uneditable.

JWindow window = new JWindow();
window.setBounds(400, 100, 700,500);
window.setVisible(true);
window.setLayout(null);
JTextField text = new JTextField();
text.setBounds(300, 300, 150, 30);
text.setEditable(true);       
window.getContentPane().add(text);

But when I tried to use Jframe as Jwindow's owner, the textfield was now editable, but the frame showed up together with the jwindow :

JFrame frame = new JFrame();
frame.setVisible(true);
JWindow window = new JWindow();
window.setBounds(400, 100, 700,500);
window.setVisible(true);
window.setLayout(null);
JTextField text = new JTextField();
text.setBounds(300, 300, 150, 30);
text.setEditable(true);       
window.getContentPane().add(text);

So, I have 2 questions :

Why JTextField is uneditable in JWindow and how could I make it editable?
What is the main purpose of using JFrame as JWindow's border?

Take a look here http://www.velocityreviews.com/forums/t366288-jtextfield-inactive-in-a-jwindow.html — RanRag, Mar 12 '12 at 06:50
The problem is that when i used jframe, then both the jwindow and jframe appeared at the same time.. — TU_HEO DAKAI, Mar 12 '12 at 06:56
Are you sure you read the complete solution provided in that link. — RanRag, Mar 12 '12 at 06:57
unrelated to your problem: _do not_ locate/size components manually, that's the job of a LayoutManager — kleopatra, Mar 12 '12 at 09:33
for 1) no. Read the api doc as well: http://docs.oracle.com/javase/7/docs/api/java/awt/Window.html#isFocusableWindow. But: what is your goal? Why do you want a _window_ (as opposed to an undecorated dialog) that doesn't appear in the taskbar? — kleopatra, Mar 12 '12 at 09:49

mKorbel · Accepted Answer · 2012-03-12T11:08:08.003

5

EDIT,

contents of JWindow is accesible only if its parent is displayed on the screen
for editable and accesible contents use un_decorated JDialog instead of JWindow, jDialog doesn't caused non_accesible contents,
reason why ..., I can't explain, not undestand why, no way in this moment, the API says me nothing about caused accesible, editable ...

. . .

1. Why JTextField is uneditable in JWindow and how could i let it able to edit?

really don't know

import java.awt.*;
import javax.swing.*;

public class WindowTest {

    private JFrame frame;

    public JPanel createContentPane() {
        JTextField text = new JTextField("Whatewer");        
        JPanel panel = new JPanel();
        panel.add(text);
        createAndShowWindow();
        return panel;
    }

    void createAndShowGUI() {
        frame = new JFrame("Window Test");
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        frame.setContentPane(createContentPane());
        frame.setLocation(50, 50);
        frame.pack();
        frame.setVisible(true);
    }

    private void createAndShowWindow() {
        JTextField text = new JTextField("Whatewer");
        JWindow win = new JWindow(frame);
        win.setLayout(new GridLayout(0, 1));
        win.add(text);
        win.pack();
        win.setLocation(150, 50);
        win.setVisible(true);
    }

    public static void main(String args[]) {
        EventQueue.invokeLater(new Runnable() {

            public void run() {
                new WindowTest().createAndShowGUI();
            }
        });
    }
}

EDIT

Yes, both are editable, and i wannt only JWindow to be displayed. Thanks!!

by default JWindow required JFrame for correct workaround
nobody tell that this JFrame must be visible (valid for GUI), then remove these code lines from frame.setDefaultClose.... including frame.setVisible(true); from my example
in this form current JVM instance never gone from RAM, untill your PC restarted or swith off, you have to add separated exit JButton with code line System.exit(0) inside ActionListener

edited Mar 12 '12 at 11:08

answered Mar 12 '12 at 06:54

mKorbel

109,525
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Thanks, but it doesn't work on my machine, in the sense that it didn't let the JWindow appear without the JFrame. – TU_HEO DAKAI Mar 12 '12 at 08:57
@Fff Dgg no idea what and why something doesn't works on your machine, there must be another issue hidden you your code, I'm assuning that my code example works, – mKorbel Mar 12 '12 at 09:01
This is your code's output on my machine, pzl have a look : http://flic.kr/p/bCpojk – TU_HEO DAKAI Mar 12 '12 at 09:09
@Fff Dgg right agreed, my question are 1) both JTextField are accesible and editable isn't it ??? 2) do you want to display only JWindow ???, 3) is/are there another issue(s) – mKorbel Mar 12 '12 at 09:13
Yes, both are editable, and i wannt only JWindow to be displayed. Thanks!! – TU_HEO DAKAI Mar 12 '12 at 09:15
When i deleted codes from : frame.setDefaultClose.. to frame.setVisible(true) >> there's nothing appeared. Only deleted the last code frame.setVisible(true) >> the jframe disappeared, but again the JWindow is uneditable.. Im using java 1.6.. – TU_HEO DAKAI Mar 12 '12 at 09:40
_really don't know_ reading the api doc helps :-) http://docs.oracle.com/javase/7/docs/api/java/awt/Window.html#isFocusableWindow clearly states that the second bullet of your edit is wrong – kleopatra Mar 12 '12 at 09:51
@kleopatra this code caused non_editable JTextField for me too – mKorbel Mar 12 '12 at 10:00
@Fff Dgg no way, true is that I never used alone JWindow, for the rest see my edit here – mKorbel Mar 12 '12 at 11:11

score 3 · Answer 2 · edited Mar 12 '12 at 06:56

3

The JWindow should be focusable. Use public void setFocusable(boolean focusable) method.

edited Mar 12 '12 at 06:56

RanRag

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answered Mar 12 '12 at 06:50

StanislavL

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JTextField uneditable in JWindow

2 Answers2