How can I get the screen size in Tkinter?

Question

I would like to know if it is possible to calculate the screen size using Tkinter.

I wanted this so that can make the program open up in the center of the screen...

It depends on the platform you want to acomplish this. So maybe you should let us know on what operating systems this should work... — Titusz, Oct 16 '10 at 17:24
you should find an answer in this stackoverflow question: http://stackoverflow.com/questions/3129322/how-do-i-get-monitor-resolution-in-python — Titusz, Oct 18 '10 at 11:42

score 103 · Accepted Answer · edited May 18 '15 at 01:43

103

import tkinter as tk

root = tk.Tk()

screen_width = root.winfo_screenwidth()
screen_height = root.winfo_screenheight()

edited May 18 '15 at 01:43

nbro

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answered Oct 16 '10 at 17:33

mouad

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9

This method will fail with multiple screen setups, but there is a [workaround](https://stackoverflow.com/a/56913005/5218354) to that. – norok2 Jul 06 '19 at 10:02
7

This actually doesn't handle my current Windows config, running a 50" 4k TV. The above tells me that my monitor is 2560x1440 instead of the actual 3840x2160 with 150% scaling. So, the Python calls are coming back with the "scaled" resolution. – GaryMBloom Mar 03 '20 at 20:16
@Gary02127 same. The answer below actually helped me out. – 10 Rep Dec 28 '20 at 02:48
@10 Rep: Which answer? [VoteCoffee's answer](https://stackoverflow.com/questions/3949844/how-to-get-the-screen-size-in-tkinter/66248631#66248631)? – Peter Mortensen Oct 08 '21 at 09:20
@PeterMortensen This was a year ago so I don't remember but I believe it is Nandit TIku;s answer. – 10 Rep Oct 08 '21 at 15:56

score 6 · Answer 2 · answered Oct 16 '10 at 18:22

6

A possible solution

import os

os.system("xrandr  | grep \* | cut -d' ' -f4")

My output:

1440x900
0

answered Oct 16 '10 at 18:22

Nandit Tiku

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Does this solution depend on X11? How likely is a user to have X11 on a mac? – Chris Lucian Jan 15 '16 at 05:07
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@wookie: No obfuscated code, nor regex, just three commands available in any standard GNU/Linux system supporting X and RandR. Simply concatenated one after another by the pipe symbol. – Alberto Vassena Apr 06 '17 at 18:56
@Nandit Tiku: Nice and short code. Is it possible to somehow (I am a dummy linux-wise) give the found monitor sizes not as strings but as values to an output tuple or something? – Joris Apr 25 '17 at 08:51
This outputs the value to the console, but does not pass it to python. Working on stdout piped version... – RufusVS Sep 23 '17 at 17:02
A piped version (and other) in a comprehensive list here: https://stackoverflow.com/questions/3129322/how-do-i-get-monitor-resolution-in-python – RufusVS Sep 23 '17 at 17:20
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Where does this work? What is xrandr? (["xrandr is an official configuration utility to the RandR (Resize and Rotate) X Window System extension"](https://wiki.archlinux.org/title/xrandr)). [RandR](https://en.wikipedia.org/wiki/X.Org_Server#Software_architecture) - *"The X.Org Server implements the server side of the X Window System core protocol version 11 (X11) and extensions to it, e.g. RandR."*. – Peter Mortensen Oct 08 '21 at 09:27
Can you elaborate? E.g. for the previous comment and on which system this was tested (Linux?), incl. version. Please respond by [editing (changing) your question/answer](https://stackoverflow.com/posts/3950195/edit), not here in comments (***without*** "Edit:", "Update:", or similar - the answer should appear as if it was written today). – Peter Mortensen Oct 08 '21 at 09:28

score 1 · Answer 3 · edited Oct 08 '21 at 09:24

For Windows:

You can make the process aware of DPI to handle scaled displays.

import ctypes
try: # Windows 8.1 and later
    ctypes.windll.shcore.SetProcessDpiAwareness(2)
except Exception as e:
    pass
try: # Before Windows 8.1
    ctypes.windll.user32.SetProcessDPIAware()
except: # Windows 8 or before
    pass

Expanding on mouad's answer, this function is capable of handling multi-displays and returns the resolution of the current screen:

import tkinter
def get_display_size():
    root = tkinter.Tk()
    root.update_idletasks()
    root.attributes('-fullscreen', True)
    root.state('iconic')
    height = root.winfo_screenheight()
    width = root.winfo_screenwidth()
    root.destroy()
    return height, width

How can I get the screen size in Tkinter?

3 Answers3

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