15-9. Checkbutton widget

A Checkbutton is comprised of a small box accompanied by a label positioned adjacent to it. The presence of a check mark signifies when it's selected. Users have the liberty to select any or all of the Checkbuttons displayed within a group. Unlike Radiobuttons, Checkbuttons are not mutually exclusive.

For example,

from tkinter import *
from tkinter import messagebox

class FirstGUI:
    def __init__(self):

self.main_window = Tk()
        self.main_window.geometry('400x200')

self.top_frame = Frame(self.main_window)
        self.bottom_frame = Frame(self.main_window)
        
        self.cb_var1 = IntVar()
        self.cb_var2 = IntVar()
        self.cb_var3 = IntVar()
        
        self.cb_var1.set(0)
        self.cb_var2.set(0)
        self.cb_var3.set(0)
        
        self.cb1 = Checkbutton(self.top_frame, text='Python', 
                               variable=self.cb_var1)
        self.cb2 = Checkbutton(self.top_frame, text='Java', 
                               variable=self.cb_var2)
        self.cb3 = Checkbutton(self.top_frame, text='C++', 
                               variable=self.cb_var3)

self.cb1.pack()
        self.cb2.pack()
        self.cb3.pack()

self.ok_button = Button(self.bottom_frame, text='OK', 
                                command=self.display)
        self.quit_button = Button(self.bottom_frame, text='Quit', 
                                  command=self.main_window.destroy)

self.ok_button.pack(side='left')
        self.quit_button.pack(side='left')

self.top_frame.pack()
        self.bottom_frame.pack()
        
        mainloop()
    
    def display(self):
        self.message = 'Selected:\n'

if self.cb_var1.get() == 1:
            self.message = self.message + '1\n'
        if self.cb_var2.get() == 1:
            self.message = self.message + '2\n'
        if self.cb_var3.get() == 1:
            self.message = self.message + '3\n'

messagebox.showinfo('Selection', self.message)

if __name__ == '__main__':
    FirstGUI()

Output:

Check buttons labeled “Python,” “Java,” and “C++” are shown. On the next line, the “OK” and “Quit” buttons are displayed. The “Python” and “Java” check buttons are selected. A pop-up window appears showing “Selected: 1 2.”

Last updated: April 22, 2025

Python Programming

15-9. Checkbutton widget