you are thinking weired.

Yes, it is a widget
Yes it is a view

If you just add a combo box, it is not shown in the headers.
A herader view is a QAbstractItemView, so you can use an item delegate for that or any other view method from that class.

@Gerolf: Indeed me too realized it is weired idea. so I endup writing itemDelegate and re implemented few virtual function including createEditor() and returned comboBox as editor but this has no effect but then I read the details of the Qt document of Qheaderview and that says that itemDelegate will not work with headerview.
Now I am lost, only thing I can read here and there is to paint the section but I dont know how to do that and even if I manage to paint who is going to manage the items of the combobox and many other signals and slot etc of a general combobox you can think of.

Guys any idea? code snippet ? example? pointer?

Indeed, Gerolf’s suggestion was off. You cannot use delegates for header views.

The only thing you can do, is create the combo box as a child of the HeaderView, and position it manually. QHeaderView has some functions that allow you to figure out where each section of the header is, and what their sizes are.

Andre, Thanx this largely works