Set Tkinter Window Position and Size or Center Screen Tkinter in Python

When you start programming in python using Tkinter. You will find that the default form or dialog location is not appear as desired location. You will have to move it by mouse. And also in some cases you just need to show Tkinter window in center position on the screen. Find latest version of Python.

So, here SKOTechLearn will explain and describe step by step process to Set Tkinter Window Position and Size or Center Screen Tkinter in Python.

Easy Way to Use Tkinter Label in Python.

Let’s Start with following way:

1. Set Tkinter Window Size in Python 
2. Set Tkinter Window Position in Python
3. Center Screen Tkinter Window in Python

By default tkinter is set in 200x200 height and width size.

 (1). Set Tkinter Window Size in Python :

If you make an application in python using tkinter. And you want to increase or decrease the size of Window or Height width of your window, you have to use following syntax:

Tk().geometry("widthxheight")

In this syntax, you have to change width and height with desired number or integer.

Now lets see the example how its work?

 from tkinter import * 
 TkForm = Tk()

 #Set Height and Width of Window
 TkForm.geometry("350x150") 

 #Set the Title according to desire
 TkForm.title("TK Size in Python")

 TkForm.mainloop()

When you run this code, the following geometry will show bellow

Tk Size Output

This way you can set the size of your application form.

Python If Else Statement with Details Description and Example.

 (2). Set Tkinter Window Position in Python :

Like above given Size setting, you can set the position using “geometry” option in TK() class. So, let’s see the syntax of position setting.

Tk().geometry("+Left+Top")

Here, you have to replace “Left” and “Top” with integer.

So, the simple example of position settings is shown bellow.

 from tkinter import * 
 TkForm = Tk()
 #position setting with desire location.
 # "+" sign indicate the Window's position in geometry option. 
 TkForm.geometry("+120+50")

 TkForm.title("TK Position Setting")
 TkForm.mainloop()

Now the output will be like this.

Location Setting

Now, if you want to set height and Width and Position of Tkinter window in one line code, then you have to use following syntax:

Tk().geometry("widthxheight+Left+Top")

Lets see, how its work with given following example:

 from tkinter import * 
 TkForm = Tk()
 # Width and Height with Location Setting
 TkForm.geometry("350x150+220+80")

 TkForm.title("TK Position Setting")
 TkForm.mainloop()

This will display the output like:

Height and Width with Location Setting

So, In This way, you can set the Size and Position of Tkinter easily.

 (3). Center Screen Tkinter Window in Python :

Now, if you want to set widow as center Screen with desire screen Size, then we have found following way where you can set center screen in python.

Remember one thing, first you have to get the size of Screen by given root option.

winfo_screenwidth(): This will show the screen Width
winfo_screenheight(): This will show the screen Height

you can get more details of .geometry() from here.

Process (1):

 from Tkinter import *
 MyTkForm = Tk()

 #Set desired Tkinter Window Size.
 MyTkForm.geometry("350x150")

 #Same size will be defined in variable for center screen in Tk_Width and Tk_height
 Tk_Width = 350
 Tk_Height = 150

 #calculate coordination of screen and window form
 x_Left = int(MyTkForm.winfo_screenwidth()/2 - Tk_Width/2)
 y_Top = int(MyTkForm.winfo_screenheight()/2 - Tk_Height/2)
 
 # Write following format for center screen
 MyTkForm.geometry("+{}+{}".format(x_Left, y_Top))

 MyTkForm.title("Process (1): Center screen with size")

 MyTkForm.mainloop()

Process (2):

 from tkinter import * 
 
 MyTkForm = Tk()

 # Set desired size (height and width) in following variable
 Tk_Width = 350
 Tk_Height = 150
 
 #calculate coordination of screen and window form
 positionRight = int( MyTkForm.winfo_screenwidth()/2 - Tk_Width/2 )
 positionDown = int( MyTkForm.winfo_screenheight()/2 - Tk_Height/2 )

 # Set window in center screen with following way.
 MyTkForm.geometry("{}x{}+{}+{}".format(500,200,positionRight, positionDown))

 # Set Desired Title
 MyTkForm.title("Process (2) : Center screen with size")

 MyTkForm.mainloop()

Process (3):

from tkinter import *

 TkForm2 = Tk()

 #set center screen window with following coordination
 MyLeftPos = (TkForm2.winfo_screenwidth() - 500) / 2
 myTopPos = (TkForm2.winfo_screenheight() - 300) / 2
 TkForm2.geometry( "%dx%d+%d+%d" % (500, 300, MyLeftPos, myTopPos))

 TkForm2.title("Process (3): TK Center Screen")
 TkForm2.mainloop()

Process (4):

import tkinter as tk

 TkForm3 = tk.Tk()

 # set window width and height
 mywidth = 350
 myheight = 150

 # get screen height and width
 scrwdth = TkForm3.winfo_screenwidth()
 scrhgt = TkForm3.winfo_screenheight()

 # write formula for center screen
 xLeft = (scrwdth/2) - (mywidth/2)
 yTop = (scrhgt/2) - (myheight/2)

 # set geometry 
 TkForm3.geometry(str(mywidth) + "x" + str(myheight) + "+" + str(xLeft) + "+" + str(yTop))

 TkForm3.title('Process (4): Center screen with size')
 TkForm3.mainloop()

So, all the process will work as same for center screen. You can choose anyone for your application development. The output will looks like:

Center Screen Window

These are the process for Set Tkinter Window Position or Center Screen Tkinter in Python with complete description.

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