Using Error Message Box In Python GUI Application

Intro

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

Software requirement

Python 3.5 and IDLE (Python 3.5)

Programming code

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

About the code

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

Output