FULL PRODUCT VERSION :
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-b64)
Java HotSpot(TM) Client VM (build 1.5.0-b64, mixed mode)


ADDITIONAL OS VERSION INFORMATION :
Linux dhola.pna.cwi.nl 2.6.13-1.1526_FC4 #1 Wed Sep 28 19:15:10 EDT 2005 i686 athlon i386 GNU/Linux


A DESCRIPTION OF THE PROBLEM :
When a JComboBox is placed in a modal JDialog, it may not be possible to select an item with the mouse (it is possible to do it with the keyboard arrows).
This will happen if the item-list does not fit in the dialog frame. It only occurs under Linux.


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
very simple. see source code.


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class ComboBug extends JFrame
{
   public ComboBug()
   {
      super("ComboBug");
      setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
      Container cpane = getContentPane();

      cpane.setLayout( new BorderLayout() );
      cpane.add( new ComboPanel() );

      pack();
      setLocationRelativeTo(null);
      setVisible(true);
   }

   public static void main( String[] args )
   {
      ComboBug mf = new ComboBug();
   }
}

class ComboPanel extends JPanel implements ActionListener
{
   ComboPanel()
   {
      JButton demo = new JButton("show bug ( if Linux )");
      demo.addActionListener(this);
      add( demo );
   }

   public void actionPerformed( ActionEvent e )
   {
      ComboDialog dial = new ComboDialog();
      dial.activate();
   }
}

class ComboDialog extends JDialog
   implements ActionListener
{
   JComboBox combo;

   ComboDialog()
   {
      super( (JFrame)null, true );
      Container cpane = getContentPane();

      combo = new JComboBox
( new String[] { "one", "two", "exit" } );

      combo.addActionListener(this);

      cpane.setLayout( new BorderLayout() );
      cpane.add( combo, BorderLayout.CENTER );
      cpane.add(
new JLabel
(" can't select item from this JComboBox with mouse "),
BorderLayout.WEST );
      pack();
   }

   void activate()
   {
      setLocationRelativeTo(null);
      combo.setSelectedIndex(0);
      setVisible(true);
   }

   public void actionPerformed( ActionEvent e)
   {
      System.err.println("selected index: " + combo.getSelectedIndex() );
      if ( combo.getSelectedIndex() == 2 ) setVisible(false);
   }
}
---------- END SOURCE ----------