Creating multilevel tabs using qtcreator: How to do that?

[robgeek]

Hello!

I would like to know how can i create, using qtcreator, Tabs with more than one level in a QDialog. I have a QMainWindow and i put a button which, when clicked, opens a QDialog, another window, thats what i want. Inside this new window i want to put tabs with three levels, like the following picture(Attached), i made this in Java. I know, i have to use QTabWidget, but everytime i go(Insert Page->After Current Page) i create a new tab int the right, but i want a new one in bellow or above.

How can i do that?