Solved

windowStateChanged(WindowEvent e) function doesn't work!!

Posted on 2008-10-04
3
1,669 Views
Last Modified: 2013-11-23
i have a problem, windowStateChanged(WindowEvent e) simply doesn't get invoked when i resize my window or click on maximize button!!
all the other functions work fine, like windowOnClose, windowIconified...etc. i can't understand what's wrong so it won't invoke.


public void mainImpl() {
    frame = new JFrame(ImageMap.Promoto_Ver);
    frame.getContentPane().setLayout(new BorderLayout());
    frame.getContentPane().add(getDemoPanel(), BorderLayout.CENTER);
    getDemoPanel().setPreferredSize(Toolkit.getDefaultToolkit().getScreenSize());
    getDemoPanel().setLocation(0, 0);
    frame.setDefaultCloseOperation(frame.DISPOSE_ON_CLOSE);
    frame.addWindowListener(new java.awt.event.WindowAdapter() {
     
      public void windowStateChanged(WindowEvent e) {
        msg.showMessageDialog(new Frame(), e.getComponent().getClass().getName() + " --- Resized ");    //this never gets invoked no matter what i do with my window!!!! why?        
    }
      
      public void windowClosing(WindowEvent e) {
        if (Drw_pro.prozessID != 0) {
          if (Drw_pro.spremenjeno) {
            int odg = msg.showConfirmDialog(new Frame(),
                                            ImageMap.GetText(132) + " " +
                                            Drw_pro.pro_name + "?",
                                            ImageMap.GetText(63),
                                            msg.YES_NO_CANCEL_OPTION,
                                            msg.QUESTION_MESSAGE, msg.getIcon());
            if (odg == msg.YES_OPTION) {
              try {
                Drw_pro.con_ref.commit();
              }
              catch (Exception ex) {}
            }
            else if (odg == msg.CANCEL_OPTION) {
              //Drw_pro.spremenjeno = false;
              return;
            }
            else if (odg == msg.NO_OPTION) {
              try {
                Drw_pro.con_ref.rollback();
              }
  etc.............etc.............etc

Open in new window

0
Comment
Question by:spartanac86
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
3 Comments
 
LVL 17

Accepted Solution

by:
Dejan Pažin earned 250 total points
ID: 22643665

windowStateChanged does not listen for resize changes. You need ComponentListener for that, here is a tutorial:

http://java.sun.com/docs/books/tutorial/uiswing/events/componentlistener.html

And here is tutorial for the state listener:

https://www.cs.auckland.ac.nz/references/java/java1.5/tutorial/uiswing/events/windowlistener.html
0
 

Author Comment

by:spartanac86
ID: 22645450
i should have only changed ...frame.addWindowListener... to ...frame.addWindowStateListener...
and it would have worked fine for minimizing/maximizing, but for resizing i think i'll need to use component listener.
Class Window inherits Component, right?
0

Featured Post

Online Training Solution

Drastically shorten your training time with WalkMe's advanced online training solution that Guides your trainees to action. Forget about retraining and skyrocket knowledge retention rates.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Since upgrading to Office 2013 or higher installing the Smart Indenter addin will fail. This article will explain how to install it so it will work regardless of the Office version installed.
If you’re thinking to yourself “That description sounds a lot like two people doing the work that one could accomplish,” you’re not alone.
The viewer will learn how to use and create keystrokes in Netbeans IDE 8.0 for Windows.

734 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question