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Null pointer exception wh

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  To: comp.lang.java.gui
I am trying to repaint a component that displays a buffered image when
the component is scrolled. I get the following error:
     [java] java.lang.NullPointerException: NullSD does not handle
this operation
     [java] at sun.java2d.NullSurfaceData.getRaster(Unknown Source)
     [java] at sun.java2d.loops.OpaqueCopyAnyToArgb.Blit(Unknown
Source)
     [java] at sun.java2d.loops.GraphicsPrimitive.convertFrom(Unknown
Source)
     [java] at sun.java2d.loops.MaskBlit$General.MaskBlit(Unknown
Source)
     [java] at sun.java2d.loops.Blit$GeneralMaskBlit.Blit(Unknown
Source)
     [java] at sun.java2d.pipe.AlphaPaintPipe.renderPathTile(Unknown
Source)
     [java] at sun.java2d.pipe.SpanShapeRenderer
$Composite.renderBox(Unknown Source)
     [java] at sun.java2d.pipe.SpanShapeRenderer.spanClipLoop(Unknown
Source)
     [java] at sun.java2d.pipe.SpanShapeRenderer.renderSpans(Unknown
Source)
     [java] at sun.java2d.pipe.SpanShapeRenderer.renderPath(Unknown
Source)
     [java] at sun.java2d.pipe.SpanShapeRenderer.fill(Unknown Source)
     [java] at sun.java2d.pipe.ValidatePipe.fill(Unknown Source)
     [java] at sun.java2d.SunGraphics2D.fill(Unknown Source)
     [java] at
i3dea.ditto.DocumentImageDisplay.paintZone(DocumentImageDisplay.java:
256)
     [java] at
i3dea.ditto.DocumentImageDisplay.paintComponent(DocumentImageDisplay.java:
467)
     [java] at javax.swing.JComponent.paint(Unknown Source)
     [java] at javax.swing.JComponent.paintChildren(Unknown Source)
     [java] at javax.swing.JComponent.paint(Unknown Source)
     [java] at javax.swing.JViewport.paint(Unknown Source)
     [java] at javax.swing.JComponent.paintChildren(Unknown Source)
     [java] at javax.swing.JComponent.paint(Unknown Source)
     [java] at javax.swing.JComponent.paintWithOffscreenBuffer(Unknown
Source)
     [java] at javax.swing.JComponent.paintDoubleBuffered(Unknown
Source)
     [java] at javax.swing.JComponent._paintImmediately(Unknown
Source)
     [java] at javax.swing.JComponent.paintImmediately(Unknown Source)
     [java] at javax.swing.RepaintManager.paintDirtyRegions(Unknown
Source)
     [java] at javax.swing.SystemEventQueueUtilities
$ComponentWorkRequest.run(Unknown Source)
     [java] at java.awt.event.InvocationEvent.dispatch(Unknown Source)
     [java] at java.awt.EventQueue.dispatchEvent(Unknown Source)
     [java] at
java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
     [java] at
java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
     [java] at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     [java] at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     [java] at java.awt.EventDispatchThread.run(Unknown Source)

Thanks
Mangai

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Null pointer exception wh "Lightning McQueen" <lightning.mcqueen@THRWHITE.remove-dii-this> - 2011-04-27 15:34 +0000
  Re: Null pointer exceptio "Daniel Pitts" <daniel.pitts@THRWHITE.remove-dii-this> - 2011-04-27 15:34 +0000

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