No way to color the border of a Tkinter Button?

user_8105907 0
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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

button widget colors tkinter python
1 Answers

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.

screenshot

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()

screenshot clam

However, changing the borderwidth, with style.configure('my.TButton', borderwidth=10) does not increase the width of the red border as expected.

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