QTableView - scroll performance changed from 4.0 to 4.1 and 4.2

[budul]

Please, tell me how one can easily paint widget which contains 3-4 other widgets to item in TableView. Simply i need these features of TableView as resizing columns, hiding columns. That's why i'm using table.

Attached is the picture of what i've got and need. How this can be done more optimized way?
Thanks a lot!
B.

[wysota]

Please, tell me how one can easily paint widget which contains 3-4 other widgets to item in TableView.

Create a custom widget with the other widgets inside it (in a layout) and then use QAbstractItemView::setIndexWidget() to set the widget. If you need the widget to be able to edit the data inside the model then set it as an editor instead.

[budul]

That's exactly what i'm doing, but via delegate. But my problem is that even if i set 20x10 widgets to the table i've got very poor performance. How can i create table with 20x10 custom widgets and will have good response from the GUI in 4.2?

I really can't have just text in the cells. :-(

Thanks again.
B.

[wysota]

Each subsequent permanent editor takes longer to add to the view, so you might want to avoid those. Using index widgets should be faster as they are not updated by the view.

In your case maybe it would be best to get rid of the view and just emulate the columns by using a QHeaderView and a custom layout (you would probably need to implement an own grid layout, but it shouldn't be too hard).

[budul]

Solution which works much better with 4.2 is to leave QTableWidget as Wysota advised. So QHeaderView + QGridLayout in QScrollArea works fine for horizonatl scrolling now. It is different with resizing columns (as table does) and hiding columns. It's not so fast as before and as one can see with use of QSplitter, but it's not big deal for me. Thanks anyway.