QTableView - scroll performance changed from 4.0 to 4.1 and 4.2

[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.