Tk Canvas Usage in Python

Question

There is a post of this code, posted by mgilson, that I don't understand. All up to the reference to big_widget makes sense. But, what does the reference to big_widget contribute? The particular post is here. I am trying to refine my code and, I think, use the Frame object. But, the reference to Canvas threw me. I tried to comment but I need 50+ reputation to do so. Not there yet.

import Tkinter as Tk
root = Tk.Tk()
f = Tk.Frame(root)
f.grid(row=0,column=0)
#place buttons on the *frame*
b1 = Tk.Button(f,text="Button1")
b1.grid(row=0,column=0)
b2 = Tk.Button(f,text="Button2")
b2.grid(row=0,column=1)

big_widget = Tk.Canvas(root)
big_widget.grid(row=1,column=0)  #don't need columnspan any more.

Reblochon Masque · Accepted Answer · 2015-08-23 05:37:08Z

1

big_widget = Tk.Canvas(root) --> A Canvas object is initialized, anchored to root and assigned to big_widget

The next line places the canvas (big_widget) at row=1 column=0 on the grid

(in the same way, a frame (f) was previously initialized and placed at row=0 column=0 on the grid inside root)

edited Aug 23, 2015 at 5:37

answered Aug 23, 2015 at 5:28

Reblochon Masque

37k10 gold badges60 silver badges85 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

WyomingGeezer Over a year ago

Yes, I understand what big_widget is. What I don't understand is how it relates to the Tk.Frame object. What purpose does it serve being created when the buttons were created on the previously created Frame?

Reblochon Masque Over a year ago

It really doesn't relate to the f frame, outside of the fact that it is in root and placed alongside of it. big_widget can be used to draw or hold other widgets like any canvas widget... f can be used to hold other widgets as well (buttons, etc...) - Don't overthink this, you have a root with two widgets, a frame and a canvas; they have different properties that you can use the way you like. :) Of course, you can have them interact, but you don't have to.

WyomingGeezer Over a year ago

TNX for the response. "It really doesn't relate"... is what I thought. In other words, those two snippets of code could be deleted and not have any effect on the answer to the original question posted. That is what I thought. Again, TNX for your comments -- much appreciated.

Collectives™ on Stack Overflow

Tk Canvas Usage in Python

1 Answer 1

3 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related