

Qt Components
The QGroupingProxyModel's view is an ordinary QTreeView and you can use the view's method setFirstColumnSpanned as well. QAbstractItemModel's method span() is currently not used by any of the model views.
However, I will add this feature to version 0.3. - Jan 06 2014
However, I will add this feature to version 0.3. - Jan 06 2014