Tkinter Messagebox Tutorial

The tkinter module in Python has Messagebox module inside, which provides 8 dialogs, which can be applied in different occasions, as explained in this section.

（1）showinfo(title,message,options): display general prompt message.

from tkinter import *
from tkinter import messagebox

def myMsg():                    # Executed when the Hello button is clicked
    result = messagebox.showinfo("Customize the title of the message box","Welcome to apidemos.com")
    print("messagebox return value:",result)

root = Tk()
root.title("apidemos.com")
root.geometry("300x160")

Button(root,text="Hello",command=myMsg).pack()

root.mainloop()

Output：

Tkinter Messagebox Tutorial

(2) showwarning(title,message,options): Show the warning message.

from tkinter import *
from tkinter import messagebox

def myMsg():                    # Executed when the Hello button is clicked
    result = messagebox.showwarning("Customize the title of messagebox","Welcome to apidemos.com")
    print("messagebox return value:",result)

root = Tk()
root.title("apidemos.com") 
root.geometry("300x160")

Button(root,text="Hello",command=myMsg).pack()

root.mainloop()

Output：

Tkinter Messagebox Tutorial

（3）showerror(title,message,options)：显示错误消息。

from tkinter import *
from tkinter import messagebox

def myMsg():                    # Executed when the Hello button is clicked
    result = messagebox.showerror("Customize the title of messagebox","Welcome to apidemos.com")
    print("messagebox return value:",result)

root = Tk()
root.title("apidemos.com")
root.geometry("300x160")

Button(root,text="Hello",command=myMsg).pack()

root.mainloop()

Output：

Tkinter Messagebox Tutorial

(4) askquestion(title,message,options): display the question message. If you click the "yes" button will send back "yes", if you click the "no" button will send back "no".

from tkinter import *
from tkinter import messagebox

def myMsg():                    # Executed when the Hello button is clicked
    result = messagebox.askquestion("Customize the title of messagebox","Welcome to apidemos.com")
    print("messagebox return value:",result)

root = Tk()
root.title("apidemos.com")
root.geometry("300x160")

Button(root,text="Hello",command=myMsg).pack()

root.mainloop()

Output：

Tkinter Messagebox Tutorial

(5) askokcancel(title,message,options): Show OK or cancel message. If you click the "OK" button will pass back True, if you click the "Cancel" button will pass back False.

from tkinter import *
from tkinter import messagebox

def myMsg():                    # Executed when the Hello button is clicked
    result = messagebox.askokcancel("Customize the title of messagebox","Welcome to apidemos.com")
    print("messagebox return value:",result)

root = Tk()
root.title("apidemos.com")
root.geometry("300x160")

Button(root,text="Hello",command=myMsg).pack()

root.mainloop()

Output：

Tkinter Messagebox Tutorial

(6) askyesno(title,message,options): display "yes or no" message. If you click the "Yes" button will be passed back True, if you click the "No" button will be passed back False.

from tkinter import *
from tkinter import messagebox

def myMsg():                    # Executed when the Hello button is clicked
    result = messagebox.askyesno("Customize the title of messagebox","Welcome to apidemos.com")
    print("messagebox return value:",result)

root = Tk()
root.title("apidemos.com")
root.geometry("300x160")

Button(root,text="Hello",command=myMsg).pack()

root.mainloop()

Output：

Tkinter Messagebox Tutorial

(7) askyesnocancel(title,message,options): display "Yes or No or Cancel" message, if you click the "Yes" button will return True, if you click the "No" button will return False, if you click the "Cancel" button to return None.

from tkinter import *
from tkinter import messagebox

def myMsg():                    # Executed when the Hello button is clicked
    result = messagebox.askyesnocancel("Customize the title of messagebox","Welcome to apidemos.com")
    print("messagebox return value:",result)

root = Tk()
root.title("apidemos.com")
root.geometry("300x160")

Button(root,text="Hello",command=myMsg).pack()

root.mainloop()

Output：

Tkinter Messagebox Tutorial

(8) askretrycancel(title,message,options): display "retry or cancel" message. If you click the "Retry" button will return True, if you click the "Cancel" button will return False.

from tkinter import *
from tkinter import messagebox

def myMsg():                    # Executed when the Hello button is clicked
    result = messagebox.askretrycancel("Customize the title of messagebox","Welcome to apidemos.com")
    print("messagebox return value:",result)

root = Tk()
root.title("apidemos.com")
root.geometry("300x160")

Button(root,text="Hello",command=myMsg).pack()

root.mainloop()

Output：

Tkinter Messagebox Tutorial

The parameters within the above dialog methods are roughly the same, title is the name of the dialog, message is the text within the dialog, options is an optional parameter, and the possible values are the following three.

(1) default constant: the default button is OK, Yes, Retry in front, you can also change this setting.

(2) icon (constant): can set the icon displayed, there are INFO, ERROR, QUESTION, WARNING 4 kinds of icons can be set.

(3) parent(widget): point out that when the dialog is closed, the focus window will return to this parent window.

The last thing to note is that the above dialogs are placed under the message module in the tkinter module, so if you want to use these default dialogs, you need to add the following import statement at the beginning of the program.

from tkinter import messagebox