maxsize() method in Tkinter | Python

This method is used to set the maximum size of the root window (maximum size a window can be expanded). User will still be able to shrink the size of the window to the minimum possible. Syntax :

 master.maxsize(height, width) 

Here, height and width are in pixels. Code #1:

Python3

# importing only those functions
# which are needed
from tkinter import *
from tkinter.ttk import *
from time import strftime

# creating tkinter window
root = Tk()

# Adding widgets to the root window
Label(root, text = 'GeeksforGeeks',
      font =('Verdana', 15)).pack(side = TOP, pady = 10)

Button(root, text = 'Click Me !').pack(side = TOP)

mainloop()

Output : Initial size of the window (maximum size of the window is not set) Expanded size of the window (this window can be expanded till the size of the screen because size is not fixed). Code #2: Fixing maximum size of the root window 

Python3

# importing only those functions
# which are needed
from tkinter import *
from tkinter.ttk import *
from time import strftime

# creating tkinter window
root = Tk()

# Fixing the size of the root window.
# No one can now expand the size of the
# root window than the specified one.
root.maxsize(200, 200)

# Adding widgets to the root window
Label(root, text = 'GeeksforGeeks',
      font =('Verdana', 15)).pack(side = TOP, pady = 10)

Button(root, text = 'Click Me !').pack(side = TOP)

mainloop()

Output : Maximum expanded size of the window Note: Tkinter also offers a minsize() method which is used to set the minimum size of the window.