CODEWITHSUNDEEP
python-2.7tkinter
Enrique Boeneker
Enrique Boeneker

Reputation: 129

How can I establish a default String value on a Tkinter Spinbox?

I have read a good solution for establishing a default numerical value on a Tkinter Spinbox widget when you use the from_ to options. But I have not seen a single one that can help establish a value (numerical or string) from a tuple.

My code is as follows, and is intended to set a default value in a Tkinter Spinbox widget from a tuple:

from Tkinter import *

root = Tk()
root.geometry('200x200+50+50')
root.title('Prueba')

t = ('One', 'Two', 'Three', 'Four', 'Five')
v = t[3]

var = StringVar()
var.set(v)
sb = Spinbox(root, values=t, textvariable=var, width=10)
sb.place(x=5, y=15)

root.mainloop()

Another variant that I have tried is the following:

from Tkinter import *

root = Tk()
root.geometry('200x200+50+50')
root.title('Prueba')

var = StringVar()
var.set('Four')
sb = Spinbox(root, ('One', 'Two', 'Three', 'Four', 'Five'), textvariable=var, width=10)
sb.place(x=5, y=15)

root.mainloop()

The only way the set method works on Spinbox (and which I took from here) is the following and only works with numbers and within a range established as options in the Spinbox widget:

from Tkinter import *

root = Tk()
root.geometry('200x200+50+50')
root.title('Prueba')

var = StringVar()
var.set(4)
sb = Spinbox(root, from_=1, to=5, textvariable=var, width=10)
sb.place(x=5, y=15)

root.mainloop()

Can please anyone help me to find out how to establish a default value in a Tkinter Spinbox from a Tuple? I will appreciate that greatly!

Upvotes: 3

Views: 5286

Answers (1)

Bryan Oakley
Bryan Oakley

Reputation: 385880

If you move the line var.set(v) to be after creating the widget, the default value will be set.

var = StringVar()
sb = Spinbox(root, values=t, textvariable=var, width=10)
var.set(v)

Upvotes: 4

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