[Qt4-preview-feedback] Update item view examples to use QStyledItemDelegate

[Pete Christensen]

Pete Christensen wrote:
> I'm a newbie using 4.4.3 and I've noticed something in the examples 
> documentation that should be updated for 4.5 if it hasn't already been 
> done:
> 
>  From doc/html/qstyleditemdelegate.html:
> 
> QStyledItemDelegate and QItemDelegate
> 
> QStyledItemDelegate has taken over the job as default delegate - leaving 
> QItemDelegate behind. They will now co-exist peacefully as independent 
> alternatives to painting and providing editors for items in views. The 
> difference between them is that the new delegate uses the current style 
> to paint its items. We therefore recommend using QStyledItemDelegate as 
> base when implementing custom delegates. The code required should be 
> equal unless the custom delegate also wishes to use the style for drawing.
> 
> However, the examples that use delegates in the "Item View" section have 
> not been updated to use QStyledItemDelegate. Luckily for me there's a 
> code snippet in doc/src/snippets/widgetdelegate.cpp that shows how to 
> use QApplication::style()->drawControl to paint controls in the correct 
> style, but the example docs just got in the way. If I had any hair to 
> begin with, I'd have less now.... :)

Same in the main Model/View documentation describing Delegates:

doc/html/model-view-delegate.html