How to find out height of a Canvas

[Robert Roy]

On Sun, 4 Jun 2000 13:53 +0100 (BST), digitig at cix.co.uk (Tim Rowe)
wrote:

>In article <eaq_4.3871$JO2.84543 at news2-win.server.ntlworld.com>, 
>richard_chamberlain at ntlworld.com (richard_chamberlain) wrote:
>
>> Hi Tim,
>> 
>> from Tkinter import *
>> root=Tk()
>> canvas=Canvas(root,height=250,width=100)
>> canvas.pack()
>> print canvas ['height']
>> 
>> canvas.itemcget has two arguments, the first is the tag or id of a
>> particular widget on the canvas and the second is the option you want 
>> back.

You might want to look at the winfo_height method. Getting the height
configuration value is not always accurate.


import Tkinter
root=Tkinter.Tk()
root.geometry('400x200+40+40')
canvas=Tkinter.Canvas(root, height=100, background='green')
canvas.pack(fill='both', expand=1)
# canvas.winfo_height will return 1 when the window is first created
# the update command sets the geometry
root.update()
print canvas["height"]
print canvas.winfo_height()
root.mainloop()

Bob
 
>
>Thanks -- it looks as if I was making things much more complicated than 
>they need to be. Situation normal!