Re: Why JWindow can not catch the KEY Type event?

From:
"Andrew Thompson" <u32984@uwe>
Newsgroups:
comp.lang.java.programmer
Date:
Fri, 04 May 2007 16:03:08 GMT
Message-ID:
<71adfe9791fcc@uwe>
JTL.zheng wrote:
..

JWindow window= new JWindow();


Somebody asked recently, what good
was a JWiindow, over an undecorated JFrame,
and apparently, *not* for..

window.addKeyListener(new KeyListener() {


..KeyListener! I expect it has something to do with
being keyboard focusable - put a text field in it, and
that may change it.

OTOH..

What should I do if I want to catch the KEY type event in JWindow?


What about something that 'looks just like it'?

<sscce>
import javax.swing.JFrame;
import java.awt.event.KeyListener;
import java.awt.event.KeyEvent;

public class TestFocus {

  public static void main(String[] args) {

    JFrame f = new JFrame();
    f.setUndecorated(true);
    f.addKeyListener(new KeyListener() {
      public void keyTyped(KeyEvent e) {
        System.out.println((int) e.getKeyChar());
      }
      public void keyReleased(KeyEvent e) {}
      public void keyPressed(KeyEvent e) {}
    });
    System.out.println( "f.isFocusable() " + f.isFocusable() );
    f.setSize(200,200);
    f.setVisible(true);
  }
}
</sscce>

HTH

--
Andrew Thompson
http://www.athompson.info/andrew/

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