How to create a check button in Tkinter

 In this tutorial you will learn how to create and use checkbutton using Tkinter module using python.

We can also add a check button into tkinter. To create a check button widget, you can use the Checkbutton class like this:

check = Checkbutton(window, text = 'choose')

In addition, you can set the checked status by passing the check value to the Check button like this:

from tkinter import *
from tkinter.ttk import *

window = Tk ()
window .title ("Check button")
window.geometry('250x250')

state = BooleanVar ()
state.set (True) #set check state

chek = Checkbutton (window, text ='choice', var = state)
chek.grid (column = 0, row = 0,padx=15, pady=15)

window.mainloop ()

 

Python Tkinter - Check button events

We can use 3 types of variables when passing an event to the check button which are 

IntVar ( )
StringVar ( )
BooleanVar ( )

Python Tkinter - Event capture checkbox click using BooleanVar( )

Here BooleanVar (), accepts only True or False (True or False), (0 or 1), otherwise, it will present an error, and every time you check and uncheck, a message will be printed as False or True.

Therefore, the complete code will look like this:

from tkinter import *
from tkinter.ttk import *
window = Tk ()
window.title("First Checkbutton")
window.geometry ('200x200')

def event_1 ():
    result = state_1.get ()
    label.configure(text=result)
    print('Checkbox value:', result )


label = Label(window, text="text")
label.grid(row=0,column=0, padx=10, pady=10)

state_1 = BooleanVar ()
state_1.set (True) # set check state
chek_1 = Checkbutton (window, text = 'State_1', var = state_1, onvalue = 1, offvalue = 0, command = event_1)
chek_1.grid (column = 0, row = 1, padx=10, pady=10)

window.mainloop ()

 

Python Tkinter - Event capture click of checkbox using StringVar( )

Here we will do the same procedure, only instead we will use StringVar ().

Attention: StringVar() accepts any value, but these values will be considered as strings.

Therefore, the complete code will look like this:

from tkinter import *
from tkinter.ttk import *
window = Tk ()
window.title("First Checkbutton")
window.geometry ('200x200')

def event_2 ():
    result = state_2.get()
    label.configure(text=result)
    print('Checkbox value:', result )


label = Label(window, text="text")
label.grid(row=0,column=0, padx=10, pady=10)

state_2 = StringVar()
state_2.set(True) # set check state
chek_2 = Checkbutton(window, text =' State_2 ', var = state_2, onvalue =' Programming Road ', offvalue =' Not Programming Road ', command = event_2)
chek_2.grid(column = 0, row = 1,padx=10, pady=15)

window.mainloop ()

 

Python Tkinter - Capture checkbox click event using IntVar( )

Here we will do the same procedure, only instead, we will use IntVar ().

Attention: IntVar() accepts only integer values, otherwise it will present an error.

Therefore, the complete code will look like this:

from tkinter import *
from tkinter.ttk import *
window = Tk()
window.title("First Checkbutton")
window.geometry('200x200')

def event_3():
    result = state_3.get()
    label.configure(text=result)
    print('Checkbox value:', result )


label = Label(window, text="text")
label.grid(row=0,column=0, padx=10, pady=10)

state_3 = IntVar()
chek_3 = Checkbutton(window, text =' State_3 ', var = state_3, onvalue = 98, offvalue = 0, command = event_3)
chek_3.grid(column = 0, row =1,padx=10, pady=15)

window.mainloop()

 

Python tkinter - How to set the check state of a check button

You can set the initial state of a check box to make it checked or unchecked.

chek_state = IntVar ()
chek_state.set (0) # uncheck
chek_state.set (1) # check

 

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