[Tutor] Weird tkFont behavior

[Steve Willoughby]

I'm probably just doing something stupid, but I can't spot the error.  I 
hope someone here can see what I'm looking past, or knows of a known 
issue with these widgets.

I'm writing a GUI app using ttk widgets in Tkinter, which includes text 
displayed in a regular text widget.  Some text in the widget will be in 
Italics, some bold, some both, some regular.  I assigned those font 
effects as tags for the text widget as you can see in the code below.

However, when I run it, about 10% of the time, the text widget will come 
up with random fonts (e.g., bold italic instead of plain roman), even 
though I confirmed that it's using 'rm' as the tag when inserting the 
text into the widget.

The initial setup code includes:
f = Tkinter.Text(self, ...)
f.tag_config('rm', font=tkFont.Font(family='Helvetica', size=10, 
weight=tkFont.NORMAL, slant-tkFont.ROMAN))
f.tag_config('bf', font=tkFont.Font(family="Helvetica', size=10, 
weight=tkFont.BOLD, slant=tkFont.ROMAN))
f.tag_config('it', font=tkFont.Font(family="Helvetica', size=10, 
weight=tkFont.NORMAL, slant=tkFont.ITALIC))
f.tag_config('bi', font=tkFont.Font(family="Helvetica', size=10, 
weight=tkFont.BOLD, slant=tkFont.ITALIC))
f.tag_config('ref', font=tkFont.Font(family="Helvetica', size=10, 
weight=tkFont.NORMAL, slant=tkFont.ITALIC), foreground='blue', 
underline=True)

text is inserted simply by:
f.insert(END, text, 'rm')

and yet some of the time, even though the 'rm' tag is there, I get one 
of the other fonts I configured for the other tags.  Do I need to keep 
other references to the tkFont objects somewhere else or something?


-- 
Steve Willoughby / steve at alchemy.com
"A ship in harbor is safe, but that is not what ships are built for."
PGP Fingerprint 4615 3CCE 0F29 AE6C 8FF4 CA01 73FE 997A 765D 696C