(Don't top-post. It confuses everything. Put your reply at the bottom,
or maybe inline)
bob smith wrote:
Thanks for the reply. Unfortunately, even when I include a variable, all of the buttons start out selected. I noticed that this is the case when I create a StringVar (rather than an IntVar, where the buttons start out correctly unselected). So, here's another simple example where all of the radio buttons start out incorrectly selected:
from tkinter import *
root = Tk()
root.grid()
v = StringVar()
Radiobutton(root, text = "Test RadioButton 1", variable=v,
value="1").grid(row = 0, column = 0, sticky = W)
Radiobutton(root, text = "Test RadioButton 2", variable=v,
value="2").grid(row = 1, column = 0, sticky = W)
root.mainloop()
Any ideas on how to have a StringVar() associated with a group of Radiobutton
objects where all of the radio buttons start off unselected?
--Bob
Date: Thu, 8 Oct 2009 20:43:21 -0400
Subject: Re: [Tutor] Python 3 and tkinter Radiobuttons
From: ken...@tds.net
To: bobsmith...@hotmail.com
CC: tutor@python.org
On Thu, Oct 8, 2009 at 6:04 PM, bob smith <bobsmith...@hotmail.com> wrote:
Hi. I’m using Tkinter to create a new Radiobutton in Python 3. However,
when I create the button, it starts off looking selected instead of
unselected (though it behaves correctly like an unselected Radiobutton). So
this means when I create a group of Radiobuttons they all look selected when
my program begins.
You have to associate the Radiobuttons with a variable, for example:
from tkinter import *
root = Tk()
root.grid()
v = IntVar()
button = Radiobutton(root, text = "Test RadioButton", variable=v, value=1)
button.grid(row = 0, column = 0, sticky = W)
button = Radiobutton(root, text = "Test RadioButton2", variable=v, value=2)
button.grid(row = 1, column = 0, sticky = W)
root.mainloop()
Kent
<snip>
I think Kent forgot to include the v.set(), to set the initial state of
that group of radiobuttons. To go to your example, just add one line:
from tkinter import *
root = Tk()
root.grid()
v = StringVar()
v.set("1")
Radiobutton(root, text = "Test RadioButton 1", variable=v,
value="1").grid(row = 0, column = 0, sticky = W)
Radiobutton(root, text = "Test RadioButton 2", variable=v,
value="2").grid(row = 1, column = 0, sticky = W)
root.mainloop()
This will select button 1, and leave button 2 unselected.
DaveA
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