Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

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

Posted on 2008-10-04
3
Medium Priority
?
1,688 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 1000 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

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Whether you've completed a degree in computer sciences or you're a self-taught programmer, writing your first lines of code in the real world is always a challenge. Here are some of the most common pitfalls for new programmers.
This is about my first experience with programming Arduino.
In this fifth video of the Xpdf series, we discuss and demonstrate the PDFdetach utility, which is able to list and, more importantly, extract attachments that are embedded in PDF files. It does this via a command line interface, making it suitable …
Simple Linear Regression
Suggested Courses

604 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