[tkinter] Window lost focus after certain codes

Python Help
1

Here is an example showing how a window lost its focus after some codes. Is it a bug or normal phenomenon?
Thanks anyone’s help.
Plus, my environment: win10, tkinter8.6.12 & tkinter 8.6.13

import tkinter
from tkinter import ttk 
root = tkinter.Tk()
entry = ttk.Entry(root)
entry.grid()
entry.focus_set()
root.state('withdrawn')
root.update()
root.resizable(False, False)
root.resizable(True, True)
root.state('normal')
root.mainloop()

I ran it in IDLE, the window created didn’t get focus.

2

I don’t know whether it’s a bug, but I don’t understand why you’re doing this:

root.state('withdrawn')
root.update()
root.resizable(False, False)
root.resizable(True, True)
root.state('normal')
3

it’s not a bug and why would you do that?.. what @MRAB is curious about. There’s alot going on here you are reducing the window size, resizing then not resizing and then returning to normal … what was your aim?

4

I am pretty sure that withdrawing root and making it invisible necessarily gives up focus.

5

It is a condensed code to concentrate on problem. Of course the actual codes doesn’t look like this, but they are the same essentially.

6

Thank you for letting me know that withdrawing and making it visible gives up focus, then how do I make it get focus again?

7

Get rid of the unneeded root calls or more entry.focus_set().

9

More ‘entry.focus_set()’ doesn’t work. Now I use ‘iconic’ instead of ‘withdrawn’ cooperating with ‘entry.focus_force’, it works well.