how to get geometry of QMainWindow without menubar and toolbars?

[wysota]

to place widget that cover central widget and dock widgets.

Ok, but why?

Nevertheless it might be easier to calculate the area by substracting the part taken by the menu, toolbars and statusbar from the whole widget.

[EnErGy[CSDX]]

Ok, but why?

Nevertheless it might be easier to calculate the area by substracting the part taken by the menu, toolbars and statusbar from the whole widget.

this is not easy solution, but looks like it is only one posible.