Central Widget of QMainWindow

[wysota]

I don't exactly understand your problem, but I guess the answer to it is to use QWidgetStack as the central widget with three pages -- objects of classes A, B and C.

[sumsin]

Actually I want to show files of a perticular directory may be in Icon veiw or in list view or in detailed list view. Can QWidgetstack solve the problem?
Means I make the QWidgetStack as the central widget of QMAinWindow then I add all the three views in its stack and call IconView widget to be visible if I choose A option.
But is there any problem of size...
Because just like QMainWindow's central widget, it automatically adjust the size.

[wysota]

Because just like QMainWindow's central widget, it automatically adjust the size.

So... is it wrong?