PyQT user authentication and customized layouts

So I'm developing an app in 开发者_JS百科PyQT and I need to implement user authentification. Basically I have drawn 3 layouts (all same size window)...on login layout, one layout for user A and one layout for user B. The the thing I want to achieve is that when user A logins he gets his specialized layout and so does B. And I want it to if possible happen in the same window (so it looks smooth...). Thanks in advance...

If the optional screens will contain completely different controls, I think a QStackedWidget with a page for each layout option would suit your needs provided that each optional layout will take up roughly the same size area.