How to Disable Minimize button in JFrame ? - URGENT

[Pratik Khetia]

I want to disable the minimize button and stop it from going to the windows taskbar.
Is there anyway I can do it ??

[Chantal Ackermann]

if its a JInternalFrame: setIconable(false);
if its a JFrame:
addWindowListener(new WindowAdapert()
{
public void windowIconified(WindowEvent e)
{
// reopen
}
});
unfortunately, there is no event to notify you that the frame is going to be iconified. you should consider using an JInternalFrame (if its not the main window of your app) or a JDialog.
chantal

[george justin]

Hi
I think, setting the property of JFrame, setResizable(false); should do it

JFrame f = new JFrame();
f.setResizable(false);
Cheers
George Justin

[Manfred Leonhardt]

George,
You can't remove the window decorations from within Java on JFrame because the underlaying OS draws the frame.
Resizable just stops a user from enlarging or shrinking the frame. It doesn't affect OS operations at all (i.e., iconification, closing, etc).
Regards,
Manfred.

[Nathan Pruett]

You could make it a JWindow... it doesn't have any window decorations at all, so it can't be minimized...

-Nate

[Pratik Khetia]

Originally posted by Nathan Pruett:
You could make it a JWindow... it doesn't have any window decorations at all, so it can't be minimized...

-Nate

But I can't even close that window. It doesn't show anything like no close button. I can not even move that window.
Could you tell me how to do that ??
Pratik

[Nathan Pruett]

Make a graphic for a close button, load it as an imageicon, and add it to a JButton. Put that JButton in the upper right hand corner, and in it's actionListener that closes the window or exits the program. Moving the window is a bit more of a problem... you'll either have to add a component that listens for the movement (like have a JPanel that listens for mousePressed events, and any mousePressed event in it lets you move the frame) or have the whole frame listen for the movement. I personally think that a special component is better, because you can change it's color or something to show that it's seperate from the display area.

The following code is a bit crude, but it illustrates these ideas:

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
 
public class CoolWindow extends JWindow
{ 
    public CoolWindow()
    {
        getContentPane().setLayout( new BorderLayout() );
        JPanel p = new JPanel();
        p.setLayout( new FlowLayout( FlowLayout.RIGHT ) );
        p.setBackground( Color.blue );
        p.addMouseMotionListener( new DragHandler() );
 
        JButton closer = new JButton( "x" );
        closer.addActionListener( new ExitHandler() );
        p.add( closer );
 
        getContentPane().add( p, BorderLayout.NORTH );
        setSize( 300, 300 );
        setVisible( true );
    }
 
    public static void main( String[] args )
    {
        new CoolWindow();
    }
 
    private class DragHandler extends MouseInputAdapter
    {
        public void mouseDragged( MouseEvent event )
        {
            int x = event.getX();
            int y = event.getY();
            int screenX = CoolWindow.this.getX();
            int screenY = CoolWindow.this.getY();
            screenX += x;
            screenY += y;
            CoolWindow.this.setLocation( screenX, screenY );
        }
    }
 
    private class ExitHandler implements ActionListener
    {
        public void actionPerformed( ActionEvent event )
        {
            System.exit( 0 );
        }
    }
}

-Nate