# -*- coding: utf-8 -*-

"""
ZetCode Tkinter tutorial

This script centers a small
window on the screen. 

author: Jan Bodnar
last modified: January 2011
website: www.zetcode.com
"""

from tkinter import Tk, Frame, BOTH



class Example(Frame):
  
    def __init__(self, parent):
        Frame.__init__(self, parent, background="white")   
         
        self.parent = parent
        self.parent.title("Centered window")
        self.pack(fill=BOTH, expand=1)
        self.centerWindow()

    def centerWindow(self):
      
        w = 290
        h = 150

        sw = self.parent.winfo_screenwidth()
        sh = self.parent.winfo_screenheight()
        
        x = (sw - w)/2
        y = (sh - h)/2
        self.parent.geometry('%dx%d+%d+%d' % (w, h, x, y))

def main():
  
    root = Tk()
    ex = Example(root)
    root.mainloop()  


if __name__ == '__main__':
    main()