Re: [gef-dev] Widget is disposed exception in FigureCanvas during startu

[Randy Hudson <hudsonr@xxxxxxxxxx>]

It is possible that another exception
occurred and this one was just cascading?  Why is the Workbench disposing
its Display?  That sounds like a startup error occurred prior to this.

DeferredUpdateManager should *not* attempt
a layout at this point because it would have been disposed() already when
the Canvas was disposed().

-randy

"Gunnar Wagenknecht" <G.Wagenknecht@xxxxxxxxxxxx> Sent by: gef-dev-admin@xxxxxxxxxxx 05/17/2004 04:58 AM Please respond to gef-dev

To:        <gef-dev@xxxxxxxxxxx>         cc:                 Subject:        [gef-dev] Widget is disposed exception in FigureCanvas during startup

Hi!

Any ideas why I'm getting the following exception during starting of Eclipse
with an opened editor?

Eclipse 2.1.3
GEF 2.1.3

Cu, Gunnar

Caused by: org.eclipse.swt.SWTException: Widget is disposed
                
at org.eclipse.swt.SWT.error(SWT.java:2330)
                
at org.eclipse.swt.SWT.error(SWT.java:2260)
                
at org.eclipse.swt.widgets.Widget.error(Widget.java:385)
                
at org.eclipse.swt.widgets.Control.getDisplay(Control.java:738)
                
at org.eclipse.swt.widgets.Widget.isValidThread(Widget.java:593)
                
at org.eclipse.swt.widgets.Widget.checkWidget(Widget.java:315)
                
at org.eclipse.swt.widgets.Scrollable.getVerticalBar(Scrollable.java:180)
                
at org.eclipse.draw2d.FigureCanvas$2.propertyChange(FigureCanvas.java:65)
                
at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:252)
                
at java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:278)
                
at org.eclipse.draw2d.DefaultRangeModel.firePropertyChange(DefaultRangeModel.java:60)
                
at org.eclipse.draw2d.DefaultRangeModel.setAll(DefaultRangeModel.java:118)
                
at org.eclipse.draw2d.FreeformViewport.readjustScrollBars(FreeformViewport.java:80)
                
at org.eclipse.draw2d.Viewport.validate(Viewport.java:352)
                
at org.eclipse.draw2d.Figure.validate(Figure.java:1595)
                
at org.eclipse.draw2d.DeferredUpdateManager.validateFigures(DeferredUpdateManager.java:230)
                
at org.eclipse.draw2d.DeferredUpdateManager.performUpdate(DeferredUpdateManager.java:132)
                
at org.eclipse.draw2d.DeferredUpdateManager$UpdateRequest.run(DeferredUpdateManager.java:57)
                
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
                
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:98)
                
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:1999)
                
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:1733)
                
at org.eclipse.swt.widgets.Display.release(Display.java:1782)
                
at org.eclipse.swt.graphics.Device.dispose(Device.java:212)
                
at org.eclipse.ui.internal.Workbench.run(Workbench.java:1390)
                
at org.eclipse.core.internal.boot.InternalBootLoader.run(InternalBootLoader.java:858)