Using Warning Message Box In Python GUI Application

Introduction

In this blog, I am going to create a warning message box in Python GUI application, when a user clicks a warning item from the message menu, it will display the warning message in the application screen.

Software requirement

Python 3.5 and IDLE (Python 3.5)

Programming code

#Create Warning Box in Python GUI Application
import tkinter as tk
from tkinter import ttk
from tkinter import Menu
from tkinter import messagebox as mbox
app = tk.Tk()
#Add a Title
app.title("Python GUI App")
#Label
ttk.Label(app, text="Warning Messsage Box App").grid(column=0,row=0,padx=20,pady=30)
#Create a Menu Bar
menuBar=Menu(app)
app.config(menu=menuBar)
#Display a Message Box
def _msgBox():
mbox.showwarning('Python Warning Message','This Python GUI Application Using Warning Box.')
#Create warning Message Menu
infoMenu=Menu(menuBar, tearoff=0)
infoMenu.add_command(label="Warning", command=_msgBox)menuBar.add_cascade(label="Message", menu=infoMenu)
#Calling Main()
app.mainloop()

About

First, I am importing the tkinter modules.
Next, I assign a class and variables and give the application title.
Next, I create a menu bar and add a menu item in the menu bar.
Next, I create a warning message function and add the warning message in displaying a command menu.
Finally, I have started the windows event loop by calling the mainloop method then I execute the code.

Output