Name: vi73552 Date: 06/03/99


I can't seem to be able to listen to focusing (for example when press
the mouse) on a JComboBox. Other components such as JTextField work
fine. Can someone confirm if this is a swing bug (Swing 1.1.1-beta2).
The code being used follows:
 <
 ((Component)lastField).addFocusListener( myFocusAdaptor);
 >

 <
 class MyFocusAdaptor implements FocusListener
 {
   public void focusGained( FocusEvent e)
   {
     System.out.println( "In focusGained for " +
((Component)e.getSource()).getName());
   }
   public void focusLost( FocusEvent e)
   {
   }
 }
 >

The following is a complete demonstration. If you have an older
version of Swing (import com.sun.java.swing.*) then you should
be able to see that focusing used to work.

================================start TestCombo.java
 //import com.sun.java.swing.*; REPLACED THIS LINE WITH NEXT TWO
 import javax.swing.JComboBox;
 import javax.swing.JTextField;
 //
 import java.awt.*;
 import java.awt.event.*;

 class TestCombo
 extends Panel
 implements FocusListener
 {
 public TestCombo()
 {
 setLayout( new GridLayout( 2,1));
 JComboBox jc = new JComboBox();
 jc.setName( "JComboBox");
 ((Component)jc).addFocusListener( this);
 add( jc);
 // MADE THE TEXT FIELD A SOURCE AS WELL SO WE CAN SEE ONE WORKING
 JTextField tf = new JTextField();
 tf.setName( "JTextField");
 tf.addFocusListener( this);
 add( tf);
 }

 public static void main( String arg[])
 {
 Frame jf = new Frame();
 jf.setLayout( new GridLayout( 1,1));
 jf.add( new TestCombo());
 jf.setSize( 100,50);
 jf.show();
 }

 public void focusGained( FocusEvent evt)
 {
 System.out.println( "Gained focus - " + ((Component)evt.getSource()).getName());
 }

 public void focusLost( FocusEvent evt)
 {
 System.out.println( "Lost focus - " + ((Component)evt.getSource()).getName());
 }
 }
 ================================end TestCombo.java
(Review ID: 83884)
======================================================================

Name: vi73552 Date: 06/04/99


JComboBox combo=new JComboBox();

combo.addFocusListener(this);


public void focusGained(FocusEvent e)
{
  System.out.println("In focus gained ");
}


public void focusLost(FocusEvent e)
{
   System.out.println("In focus Lost");
}
(Review ID: 83920)
======================================================================