Name: ks88420 Date: 09/14/2000


java version "1.3.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0-C)
Java HotSpot(TM) Client VM (build 1.3.0-C, mixed mode)


Details of problem and steps to reproduce is containted
within the source.
----------------------------------------------------------

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

public class bugdemo2 {

JFrame jFrame;
Font originalInternalFrameFont;
Font originalInternalFrameTitleFont;
String fontKey = "InternalFrame.font";
String titleFontKey = "InternalFrame.titleFont";
UIManager ui = new UIManager();

public static void main(String[] para) {
bugdemo2 demo = new bugdemo2();
demo.display();
}

public void display() {

originalInternalFrameFont = (Font) ui.get( fontKey );
originalInternalFrameTitleFont = (Font) ui.get( titleFontKey );

jFrame = new JFrame("JFrame Title");
JDesktopPane desktop = new JDesktopPane();
jFrame.setContentPane( desktop );

JInternalFrame iFrame = new JInternalFrame( "", true, true, true, true );
desktop.add( iFrame );


        JInternalFrame anotherIFrame = new JInternalFrame(
            "Use Motif and click on this 'body' a few times - Exceptions thrown", true, true, true, true );
        JTextArea demo2text = new JTextArea();
        demo2text.append( "a) Select Motif Look and Feel.\n" );
        demo2text.append( "b) After Look and Feel updated, click on this\n" );
        demo2text.append( " frame's empty body (below this text area) a fewtimes.\n" );
        demo2text.append( " Exceptions should be thrown at the commandprompt.\n" );
        demo2text.append( "NOTE :\n" );
        demo2text.append( " 1) Exceptions are not thrown for other LAF, exceptMotif.\n" );
        demo2text.append( " 2) After Exceptions are thrown, selecting theother\n" );
        demo2text.append( " internal frame may not set it to the frontand\n" );
        demo2text.append( " 'ghost border' may be seen after iconizing theinternal frame.\n");
        demo2text.append( " 3) However, Exceptions will not be thrown (byMotif's LAF)\n" );
        demo2text.append( " if you first select this frame by clicking onthe title bar.\n" );
        demo2text.append( "Test platform : Java 2, 1.3 - Win98" );
        anotherIFrame.getContentPane().add( demo2text, BorderLayout.NORTH );
        desktop.add( anotherIFrame );

        anotherIFrame.setBounds( 10,10,580,350 );

        jFrame.setBounds( 30,10,620,450 );
        iFrame.setBounds( 50,350,500,100 );

iFrame.getContentPane().setLayout(new BoxLayout( iFrame.getContentPane(),BoxLayout.Y_AXIS));

JButton buttonCross = new JButton( "Cross LAF" );
JButton buttonWin = new JButton( "Win LAF" );
JButton buttonMotif = new JButton( "Motif LAF" );

JPanel pane1 = new JPanel();
pane1.setLayout( new BoxLayout( pane1, BoxLayout.X_AXIS));
pane1.add( buttonCross );
pane1.add( buttonWin );
pane1.add( buttonMotif );

iFrame.getContentPane().add( pane1 );

jFrame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});

buttonCross.addActionListener( new ActionListener() {
public void actionPerformed( ActionEvent e ){
setLAF("javax.swing.plaf.metal.MetalLookAndFeel" );
}
});

buttonWin.addActionListener( new ActionListener() {
public void actionPerformed( ActionEvent e ){
setLAF("com.sun.java.swing.plaf.windows.WindowsLookAndFeel" );
}
});

buttonMotif.addActionListener( new ActionListener() {
public void actionPerformed( ActionEvent e ){
setLAF("com.sun.java.swing.plaf.motif.MotifLookAndFeel" );
}
});

        anotherIFrame.setVisible( true );
iFrame.setVisible( true );
jFrame.setVisible( true );

}

public void setLAF( String LAF ) {
try {
UIManager.setLookAndFeel( LAF );
} catch (Exception ex) {
System.out.println( ex );
}
SwingUtilities.updateComponentTreeUI(jFrame);
}

}

Exception :
---------------
Exception occurred during event dispatching:
java.lang.NullPointerException
        at com.sun.java.swing.plaf.motif.MotifDesktopPaneUI$MotifDesktopManager.endDraggingFrame(MotifDesktopPaneUI.java:112)
        at javax.swing.plaf.basic.BasicInternalFrameUI$BorderListener.mouseReleased(BasicInternalFrameUI.java:668)
        at java.awt.Component.processMouseEvent(Component.java:3715)
        at java.awt.Component.processEvent(Component.java:3544)
        at java.awt.Container.processEvent(Container.java:1165)
        at java.awt.Component.dispatchEventImpl(Component.java:2593)
        at java.awt.Container.dispatchEventImpl(Container.java:1214)
        at java.awt.Component.dispatchEvent(Component.java:2497)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:2452)
        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:2217)
        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:2126)
        at java.awt.Container.dispatchEventImpl(Container.java:1201)
        at java.awt.Window.dispatchEventImpl(Window.java:912)
        at java.awt.Component.dispatchEvent(Component.java:2497)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:333)
        at java.awt.EventDispatchThread.pumpOneEvent(EventDispatchThread.java:103)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:84)

(Review ID: 109554)
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