Python Tkinter message box example

Last update on April 25 2025 12:53:08 (UTC/GMT +8 hours)

Write a Python program that displays a button using Tkinter. When the button is clicked, display a message box with the message.

Sample Solution:

Python Code:

import tkinter as tk
from tkinter import messagebox

# Function to display the message box
def show_message_box():
    messagebox.showinfo("Message", "Button Clicked!")

# Create the main window
root = tk.Tk()
root.title("Message Box Example")

# Create a button widget
button = tk.Button(root, text="Click here to display a message", command=show_message_box)
button.pack(padx=20, pady=20)

# Start the Tkinter main loop
root.mainloop()

Explanation:

In the exercise above -

Import the necessary modules, including tkinter and messagebox.
Define a function "show_message_box()" function that displays the message box using messagebox.showinfo() when called.
Create the main Tkinter window 'root' and set its title.
Create a button widget labeled "Click here to display a message" and associate it with the "show_message_box()" function using the command parameter.
Finally, start the Tkinter main loop with “root.mainloop()”, which keeps the GUI application running.

Output:

Flowchart:

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