Inheriting QAbstractItemView

Which methods needs to be reimplemented in class that inherits QAbstractItemView? In documentation I've found that custom View class "only need to implement their own view-specific functionality". I've implemented pure virtual functions with drawing in visualRect(), but there is nothing showed after setting model in my custom View widget.

All the pure virtual methods and at least paintEvent() need to be reimplemented.

It might help if you elaborate a bit on why you want to create your own view class.
In a lot of cases this is not required and other solutions can be employed, e.g. custom delegates.

Cheers,
_