Name: diC59631 Date: 11/27/98


I have included the problem source, and a workaround.
If I programatically iconify internal frames prior to
making the main frame visible, the iconfied internal
frames do not display as icons when the main frame is
made visible. If any other internal frames are iconified
after the main frame is made visible, they too become
invisible.

Here is the code (I used code obtained from Java World on
how to program internal frames):

import com.sun.java.swing.*;
import java.awt.BorderLayout;

public class InternalFrames extends JFrame {

   JDesktopPane desktop;
   DesktopManager manager;
   JInternalFrame f1;
   JInternalFrame f2;
   JInternalFrame f3;
   JInternalFrame f4;

   public InternalFrames()
   {
      super("Internal Frames Demo");
      desktop = new JDesktopPane();
      desktop.setOpaque(false);
      getContentPane().add(desktop,BorderLayout.CENTER);

      manager = new DefaultDesktopManager()
      {
         public void activateFrame(JInternalFrame f)
         {
            super.activateFrame(f);
            System.out.println(f);
         }
      };

      desktop.setDesktopManager(manager);

      JButton button;

      try
      {
      f1 = new JInternalFrame("Always Below", true,false,true,true);
      button = new JButton("Ok");
      f1.getContentPane().add(button,BorderLayout.CENTER);
      f1.setBounds(0,0,200,75);
      desktop.add(f1, new Integer(desktop.DEFAULT_LAYER.intValue()-1));

      f2 = new JInternalFrame("Default Layer #1", true,false,true,true);
      button = new JButton("Ok");
      f2.getContentPane().add(button,BorderLayout.CENTER);
      f2.setBounds(25,25,200,75);
      desktop.add(f2,desktop.DEFAULT_LAYER);
      f2.setIcon(true);

      f3 = new JInternalFrame("Default Layer #2", true,false,true,true);
      button = new JButton("Ok");
      f3.getContentPane().add(button,BorderLayout.CENTER);
      f3.setBounds(50,50,200,75);
      desktop.add(f3,desktop.DEFAULT_LAYER);
      f3.setIcon(true);

      f4 = new JInternalFrame("Always Above", true,false,true,true);
      button = new JButton("Ok");
      f4.getContentPane().add(button,BorderLayout.CENTER);
      f4.setBounds(75,75,200,75);
      desktop.add(f4, new Integer(desktop.DEFAULT_LAYER.intValue()+1));
      f4.setIcon(true);
      }
      catch( java.beans.PropertyVetoException e )
      {
         e.printStackTrace();
      }

      setSize(300,300);
      show();
   }

   public static void main(String args[])
   {
        new InternalFrames();
   }
}
(Review ID: 41105)
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