Stinson, Wynn A Civ USAF AFMC 556 SMXS/MXDED wrote:
[In the future please take the time to choose a meaningful subject]
> Can someone give me some sample code to use to determine if a checkbox
> has been selected using Tkinter? thanks
Method 1: check the state of the underlying variable:
import Tkinter as tk
root = tk.Tk()
var = tk.IntVar()
cb = tk.Checkbutton(root, text="the lights are on", variable=var)
cb.pack()
def showstate():
if var.get():
print "the lights are on"
else:
print "the lights are off"
button = tk.Button(root, text="show state", command=showstate)
button.pack()
root.mainloop()
Method 2: trigger a function when the underlying variable changes
import Tkinter as tk
root = tk.Tk()
var = tk.IntVar()
cb = tk.Checkbutton(root, text="the lights are on", variable=var)
cb.pack()
def showstate(*args):
if var.get():
print "the lights are on"
else:
print "the lights are off"
var.trace_variable("w", showstate)
root.mainloop()
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