Hide Menu Bar in Windows 10?

Alexander Buers's icon

Is it possible to hide the Menu and Toolbar in Windows?

;
hideMenuBar

does not work. Crtl+8 of course works but I want to start the patch without it.
I miss the runtime for stuff like that!

Anyidea?

Source Audio's icon

read helpfile of thispatcher object, window messages.
Patcher inspector can disable toolbar and sidebar