Tk Source Code

Yes, it is hard for the folks on this side to understand.

Normally, by setting a discrete size, you say "this size".

I suppose, the "root.resizable(0,0)" enables/disables windows decoration for resizing for the window. I suppose, your 2nd "root.resize" should have parameters (1,1).

To my experience, the fact if a window manager may change size is controlled if an explicit size is active.

Thus, after "f1.config(width=500,height=100)" there should be a command added to make resizing possible again.

AFAIK, it might be the window managers responsability to honor this or not. It is also highly platform dependent...

Take care,
Harald