I'm working on an application and I would like to use the decorated look
and feel on my frames and dialogs.  But I've run into a snag.  When you
create a JFrame without the default L&F decoration, it is constrained in
size by the screen dimensions (although is extends below the task bar in
WinXP).  If I turn on the default L&F decoration the JFrame expands to
the size of the components in the frame.  Anybody know how to get the
decorated frame to act like an undecorated one?

Thanks,

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class test {
    public static void main(String[] args) {
        Runnable r = new Runnable() {
            public void run() {
//****** uncomment the line below for undecorated frame *******

//                JFrame.setDefaultLookAndFeelDecorated(true);
                class BigPanel extends JPanel {
                    public BigPanel() {
                        super();
                        setPreferredSize(new Dimension(400,2000));
                    }
                    public void paintComponent(Graphics g) {
                        g.setColor(Color.LIGHT_GRAY);
                        g.fillRect(0,0,getWidth(),getHeight());
                        g.setColor(Color.BLUE);
                        g.setFont(new Font("Arial",Font.BOLD,48));
                        FontMetrics fm = g.getFontMetrics();
                        int h = fm.getHeight();
                        int y = h;
                        while (y < getHeight()) {
                            g.drawString("Now is the time for all
good",10,y);
                            y += h;
                        }
                    }
                }

                JFrame frame = new JFrame("test");
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                BigPanel panel = new BigPanel();
                JScrollPane sp = new JScrollPane(panel);
                frame.add(sp);
                frame.pack();
                frame.setVisible(true);
            }
        };
        EventQueue.invokeLater(r);
    }
}