[Tkinter-discuss] ttk.Treeview: coloring rows using tags doesn't work with Python 3.7.3

[Sibylle Koczian]

Am 30.04.2019 um 15:38 schrieb Emiliano:
> 
> 
> El 29 de abril de 2019 8:16:50 AM GMT-03:00, Sibylle Koczian <nulla.epistola at web.de> escribió:
>> Hello,
>>
>> the following script shows a Treeview with names and country codes of
>> some towns in Germany. Towns with country code "HE" or "BY" should be
>> shown with coloured background, in the case of "BY" additionally with
>> white text.
>>
>> This works using Python 3.5 or 3.6. I seem to remember that it worked
>> with earlier versions of Python 3.7, but that's not certain. Using
>> Python 3.7.3 all the entries have white background and black text.
>> Opening an entry with Enter or double click shows the name of the town
>> in the Entry field, together with the country name, if the row has the
>> tag for HE or BY. So the entries have the tags they should, but the
>> color doesn't change.
>>
>> Changing the font of an entry using tags does work.
>>
>> All of these Python versions come with tcl/tk version 8.6, but I don't
>> know the patch numbers, they probably changed. The official
>> documentation for tkinter and for tcl/tk seems to show that the script
>> is correct. I can see no hint of recent changes in the use of tags,
>> tag_configure and the options usable with tags.
>>
> 
> Maybe you hit this bug?
> 
> http://core.tcl.tk/tk/tktview?name=509cafafae
> 

Yes, that seems exactly right. I put the tkinter workaround by ulfalizer 
into my script and now the entries are coloured as they should. The 
discussion is helpful too.

Many thanks!

Sibylle