[Tkinter-discuss] experimental tk program in python3

[python at bdurham.com]

Hi Michael,

> For widgets that don't accept keyboard focus you can use the highlightbackground option to create a colored border (although you cannot add a "3D"-relief this way) ... <snipped>

I took your example and added another frame and widgets that gain focus.
Your highlightbackground suggestion only works when there's a single
frame without widgets that can gain focus themselves. Interesting: On my
machine, the highlightbackground appears to work the opposite of its
stated purpose, eg. when button2 has focus, frame 1 shows its
highlightbackground and vice-versa.

<code>
from Tkinter import *

root = Tk()
f1 = Frame(root, bg='white', highlightthickness=2,
highlightbackground='red', width=200, height=200) 
f1.pack(padx=100, pady=100, fill='both', expand=1)
Button( f1, text='Button 1' ).pack()

f2 = Frame(root, bg='white', highlightthickness=2,
highlightbackground='green', width=200, height=200) 
f2.pack(padx=100, pady=100, fill='both', expand=1)
Button( f2, text='Button 2' ).pack()

root.mainloop()
</code>

I'm going to start a new thread on the topic of creating frames with
custom border colors.

Regards,
Malcolm