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[news.eclipse.platform.swt] StyledText issue 
hi All:
I wanna to set the StyledText some text in Hightlight ,So I used StyleRange.
but it throws these exceptions:


Exception in thread "main" java.lang.IllegalArgumentException: Argument not
valid
        at org.eclipse.swt.SWT.error(Unknown Source)
        at org.eclipse.swt.SWT.error(Unknown Source)
        at org.eclipse.swt.SWT.error(Unknown Source)
        at org.eclipse.swt.custom.StyledText.setStyleRanges(Unknown Source)
        at org.eclipse.swt.custom.StyledText.setStyleRange(Unknown Source)
        at 
        at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source)
        at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)
        at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
        at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source)
        at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)

dnise

2008-04 -23