Set style for Checkbutton or Labelframe in python tkinter

Question

I have designed a GUI using python tkinter. And now I want to set style for Checkbutton and Labelframe, such as the font, the color .etc I have read some answers on the topics of tkinter style, and I have used the following method to set style for both Checkbutton and Labelframe. But they don't actually work.

Root = tkinter.Tk()
ttk.Style().configure('Font.TLabelframe', font="15", foreground = "red")
LabelFrame = ttk.Labelframe(Root, text = "Test", style = "Font.TLabelframe")
LabelFrame .pack( anchor = "w", ipadx = 10, ipady = 5, padx = 10, pady = 0, side = "top")

Can you tell me the reasons, or do you have some other valid methods? Thank you very much!

Answer 1

You need to configure the Label sub-component:

from tkinter import *
from tkinter import ttk

root = Tk()

s = ttk.Style()

s.configure('Red.TLabelframe.Label', font=('courier', 15, 'bold'))
s.configure('Red.TLabelframe.Label', foreground ='red')
s.configure('Red.TLabelframe.Label', background='blue')
lf = ttk.LabelFrame(root, text = "Test", style = "Red.TLabelframe")
lf.pack( anchor = "w", ipadx = 10, ipady = 5, padx = 10,
                  pady = 0, side = "top")
Frame(lf, width=100, height=100, bg='black').pack()
print(s.lookup('Red.TLabelframe.Label', 'font'))
root.mainloop()