Add QMenuBar into QWidget

[Cucus]

Hi,

I'm trying to add a QMenuBar in a QWidget but I m lost in a step, I tell you all the work done for the moment:

I've create a layout in the QWidget called MenuBar
I promote the layout to QMenuBar and associate this layout to a classe: menuBar.cpp (with header menuBar.h)
I create those classes.

What's next?

PD: I have attached an image which I hope it will help....