Implementation of the menu as in Office?

Question

Qt

Good afternoon. I work in Qt Creator, with the help of which components you can implement a menu similar to the one in Microsoft Office.

Menu

As I understand the menu itself, this is tabWidget + Styles.
But the following is important to me, depending on the tab, the area under the menu should change.
For example:
After clicking the first tab, Table Widget should appear under the menu.
After clicking the second tab Elements to display reports.
etc.
If you stretch the tabwidget to the entire workspace and pin buttons for the menu at the top, then there will be no visual distinction between the workspace and the menu. How can this problem be solved?
And question 2, is it possible to collapse the menu so that only the tabs are visible, or is this better done by resizing the tabWidget?

Answer 1

Tyrk
https://github.com/martijnkoopman/Qt-Ribbon-Widget
and original source
https://docs.microsoft.com/en-us/windows/win32/uxg...
https://docs.microsoft.com/ enus/windows/win32/win...

Answer 2

There is QTitanRibbon, but it is paid