ttk checkbutton is not deselected by default

Question

Please kick here to see the current output and expected output

I have a simple python program where i want to deselect the checkbutton by default. I want to see it the same way as when a user unchecks a tick box. Please let me know how to achieve it.

from tkinter import *
from tkinter import ttk

def urgentReq():
    global box
    state = box.state()
    if(box.instate(['selected'])):        
        print ("--> Urgent: ",state)
    else:
        print ("--> Not Urgent:",state)

gui = Tk()
gui.title("GUI")
gui.geometry('200x150')

box = ttk.Checkbutton(gui, text ='Urgent Request', command=lambda: urgentReq())
box.grid(column=1, row=4, pady=40, sticky="N")
#write something here to unselect the box by default

When I run your code the `Checkbutton` *is* unselected initially. — martineau, Jun 15 '20 at 12:02

score 3 · Answer 1 · answered Nov 11 '21 at 02:37

3

box.state(['!alternate'])  #box appear unchecked
box.state(['selected'])  #box appear checked

answered Nov 11 '21 at 02:37

pkanda

151
3
10

`box.state(['!alternate'])` solved by problem. – baltasvejas Nov 17 '21 at 09:48

score 1 · Answer 2 · answered Jan 20 '21 at 18:59

Use the .invoke() method, but from what I read elsewhere is will also call the command, if one is associated. The instance I was trying to use this, my check button didn't have a command as a parameter, so this worked perfectly for me.

Hope this helps and good luck!

score 0 · Accepted Answer · answered Jun 15 '20 at 14:23

Somehow the initial state of the CheckButton = ('alternate',).

There is a workaround I found here: tkk checkbutton appears when loaded up with black box in it. If you apply it to your code like this, it seems to work:

checkVar = IntVar()
box = ttk.Checkbutton(gui, text ='Urgent Request', command=lambda: urgentReq(), variable=checkVar)

ttk checkbutton is not deselected by default

3 Answers3