禁用后如何（重新）启用tkinter ttk Scale小部件？

Question

I'm trying to reenable my Scale widget in Python tkinter after disabling it but it doesn't work. I tried multiple options but none are working.

s.state(["normal"]);
s.configure(state='normal');

The error that I'm getting is saying:

 _tkinter.TclError: unknown option "-state" 

Answer 1

Since you use ttk widget, the state that you needed to reenable your widget is !disabled .

According to ttk states :

A state specification or stateSpec is a list of state names, optionally prefixed with an exclamation point (!) indicating that the bit is off.

try:
    import tkinter as tk
    import tkinter.ttk as ttk
except ImportError:
    import Tkinter as tk
    import ttk


root = tk.Tk()

scale = ttk.Scale(root)
scale.pack()

#   disable scale
scale.state(['disabled'])
#   enable scale
scale.state(['!disabled'])

root.mainloop()