title: how to change font size of messages inside messagebox.showinfo(message='Hello') in tkinter python3.7
body: <p>I am trying to make displayed message fonts bigger for certain messages when it get displayed so that its easier for eyes to read than standard size. I checked on past post regarding this issue and couldn't found any answers that helps. I found answer using r.option_add but it seems not to have any effect on windows. If any one has gone through this issue and have suggestion/answer to fix this problem i would be thankful to everyone who put their time and effort on it. Thank you.</p>
  
  <p>Code i found on previous posts or link: <a href="https://grokbase.com/t/python/tkinter-discuss/054chdx51f/font-control-in-tkmessagebox" rel="nofollow noreferrer">https://grokbase.com/t/python/tkinter-discuss/054chdx51f/font-control-in-tkmessagebox</a></p>
  
  <p>from tkinter import *</p>
  
  <p>from tkinter import messagebox</p>
  
  <p>r = Tk()</p>
  
  <p>r.option_add('*font', 'Helvetica-18')</p>
  
  <p>messagebox.showinfo(message='Hello')</p>