How to set font of a messagebox with Python tkinter?

Question

I'm using the simple message-boxes provided in tkinter and I'm wondering if there's any way to change the font.

This is the general idea of what I want, but the font= option doesn't work.

from tkinter import Tk
import tkinter.messagebox as tkmsg

_root = Tk()
_root.withdraw()
tkmsg.showinfo(
    "Info",
    "Some monospaced text",
    font=("Monospace", 15)
)
_root.destroy()

Is there any way to change the font or do I have to use a custom dialog?

You should make your own tkinter.Toplevel() dialog to customize fonts. Oh, and use tkinter.font.Font() instances. — SzieberthAdam, Dec 02 '13 at 09:03
@SzieberthAdam I don't think there's a way to use Toplevel() to set fonts. Am I missing something? — kiri, Dec 02 '13 at 10:11
As in answer of Lucas Sabião, you should put a Label widget into your toplevel dialog window. You can customize font of the Label. — SzieberthAdam, Dec 02 '13 at 10:45
http://stackoverflow.com/questions/9347645/control-font-in-tkmessagebox — Gabriel Staples, Aug 20 '16 at 22:34

score 3 · Answer 1 · edited May 23 '17 at 12:08

3

See here for how to change the dialog box text: Control Font in tkMessageBox

In short (copied verbatim from the link above):

You can configure the font for just dialog boxes by doing the following:
from Tkinter import *
import tkMessageBox
r = Tk()
r.option_add('*Dialog.msg.font', 'Helvetica 12')
tkMessageBox.showinfo(message='Hello')

Be sure to call r.option_clear() to set the font back to normal afterwards.

edited May 23 '17 at 12:08

Community

1
1

answered Aug 27 '16 at 16:10

Gabriel Staples

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Unfortunately it did not work for me in Python 3.4.4 (even after changing MessageBox for the newer messagebox capitalization). And when I did r.option_add('*font', 'Courier 12') it changed all the fonts except the messagebox fonts. – CuriousMarc Dec 27 '17 at 21:59
@CuriousMarc Nor for me in Python 3.6.5. – C. R. Yasuo Aug 28 '18 at 12:49

score 3 · Answer 2 · answered Apr 29 '20 at 19:39

You can change the default font for captions:

import tkinter as tk
from tkinter import messagebox as mb
from tkinter import font
root = tk.Tk() 
font1 = font.Font(name='TkCaptionFont', exists=True)
font1.config(family='courier new', size=20)
mb.showinfo(message='Hello')

score 0 · Answer 3 · answered Dec 02 '13 at 09:17

0

You should write your own messagbox. Tkinter invoke system dialog for Windows or Mac and genetate dialogs for Linux. In all cases is imposible change Tkinter dialogs.

answered Dec 02 '13 at 09:17

Michael Kazarian

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See here, you can change the dialogs: http://stackoverflow.com/questions/9347645/control-font-in-tkmessagebox – Gabriel Staples Aug 20 '16 at 22:40

Lucas Sabião · Accepted Answer · 2022-10-27T22:49:56.683

-5

~~you can't. write your own messagebox using the toplevel widgted (tkinter.Toplevel()) and label!~~

Something like this (from http://effbot.org/tkinterbook/label.htm)

from Tkinter import *

master = Tk()

w = Label(master, text="Hello, world!")
w.pack()

mainloop()

i hope it helps!

Edit: This is a very old answer, 3 years later someone said it's possible: Control Font in tkMessageBox

edited Oct 27 '22 at 22:49

answered Dec 02 '13 at 10:11

Lucas Sabião

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Wrong; you can. See here: http://stackoverflow.com/questions/9347645/control-font-in-tkmessagebox – Gabriel Staples Aug 20 '16 at 22:34

How to set font of a messagebox with Python tkinter?

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