From what I know the default delegate in Qt4.3- might not support that feature. You might try applying the stylesheet on the view, but that probably won't work. You might also try applying the stylesheet to the view and using the view's style() to paint the progress bar. If that doesn't work, you'll need to get a snapshot of Qt4.4 with QStyledItemDelegate functionality and there it should work just fine (at least I hope so).
See the details here:http://labs.trolltech.com/blogs/2007...ng-item-views/
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