Hi --
I've noticed a very strange phenomenon: If I attempt to run a swing app
using JDK1.2, I always get the following exception:
Exception occurred during event dispatching:
java.lang.IllegalArgumentException: Raster ShortInterleavedRaster: width
= 198 height = 78 #numDataElements 1 is incompatible with ColorModel
DirectColorModel: rmask=7c00 gmask=3e0 bmask=1f amask=0
at java.awt.image.BufferedImage.<init>(BufferedImage.java:521)
at sun.awt.image.OffScreenImage.<init>(OffScreenImage.java:70)
at
sun.awt.motif.MComponentPeer.createImage(MComponentPeer.java:286)
at java.awt.Component.createImage(Component.java:2079)
at java.awt.Component.createImage(Component.java:2077)
at
javax.swing.RepaintManager.getOffscreenBuffer(RepaintManager.java:517)
at javax.swing.JComponent.paint(JComponent.java:506)
at java.awt.Container.paint(Container.java:770)
at javax.swing.JFrame.update(JFrame.java:255)
at
sun.awt.motif.MComponentPeer.handleEvent(MComponentPeer.java:248)
at java.awt.Component.dispatchEventImpl(Component.java:2429)
at java.awt.Container.dispatchEventImpl(Container.java:1032)
at java.awt.Window.dispatchEventImpl(Window.java:714)
at java.awt.Component.dispatchEvent(Component.java:2289)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:258)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:68)
( BTW, I am also setting the os.name property to something like SunOS or
Windows, because otherwise I get a NullPointerException -- the UIManager
can not find the UIDefaults in the Hashtable.)
This occurs when I run the Blackdown port locally, and also when I run
the app on a Solaris box and set the remote display. My code simply
instantiates a blank JFrame and sets its bounds. I had the same problem
with a RedHat 5.1 and now the RedHat 6.0 system. The error does not
occur when I use awt only. Nothing of the sort occured with JDK1.1.7 and
the latest swing release.
My window manager is WindowMaker 0.51. I am using GNOME, from the RedHat
6 dist.
My code looks like this:
-------------------- begin TestFrame.java --------------------------
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class TestFrame extends JFrame
{
public TestFrame(String title)
{
super(title);
addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
TestFrame.this.dispose();
System.exit(0);
}
});
setBounds(250,250,200,100);
setBackground(Color.white);
show();
}
public static void main(String[] args)
{
try
{
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
}
catch (Exception ex_ignored)
{
// default l&f left in place
}
new TestFrame("Test");
}
}
--------------------- end -------------------------
--
Armen Yampolsky
Axiom Software Labs
New York
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