No way to color the border of a Tkinter Button?

问题

It works with some other widgets, but not with Buttons.

from Tkinter import *
root = Tk()
root.geometry("600x300+400+50")

btn_up = Button(root, text='Go UP')
btn_up.config(highlightbackground="red", highlightcolor="red", highlightthickness=10, relief=SOLID)
btn_up.pack()

root.mainloop()

Python 2.7 - Windows 10

回答1:

I am using linux and when I run your code, I get a button with a thick red border, so it looks like that the default Windows theme does not support highlightthickness while the default linux theme does.

If you want to change the border color, it is possible with some ttk themes like 'clam':

from Tkinter import *
import ttk
root = Tk()

style = ttk.Style(root)
style.theme_use('clam')
style.configure('my.TButton', bordercolor="red")

ttk_button = ttk.Button(root, text='Go UP', style='my.TButton')
ttk_button.pack()

root.mainloop()