Python Tkinter: Attempt to get widget size

Question

I am trying to find the size of my window by using the winfo_geometry() function but it ends up returning 1x1+0+0 I have also tried winfo_height, winfo_width but i keep getting 1

CODE

from tkinter import *

root=Tk()

root.geometry('400x600')

print (root.winfo_width())
print (root.winfo_height())
print (root.winfo_geometry())

root.mainloop()

Forbear

Answer 1

You are trying to get the dimensions before the window has been rendered.

Add a root.update() before the prints and it shows the correct dimensions.

from Tkinter import *

root=Tk()

root.geometry('400x600')

root.update()

print (root.winfo_width())
print (root.winfo_height())
print (root.winfo_geometry())

root.mainloop()

Dactylogram

Answer 2

The right way to find the actual width within the initial procedure to display a window is to use winfo_reqwidth() and winfo_reqheight(). It shows you the parameter that is requested to tkinters geometry manager. Example:

root = tk.Tk()
print(f'''width is {root.winfo_width()},
requested width is {root.winfo_reqwidth()}''')
root.mainloop()

Spectrometer