Thanks to everyone who replied. All replies were constructive, none
were telling me to stop belly-aching.
I forgot/omitted to state that it was I who wrote the original project
(in a completely different language), making the task of re-writing it
much less formidable. And meaning that I am familiar with the general
concepts of building a GUI. Still, it will be a lot of work.
Grant, I may well buy one of the books you suggested.
I find the topic of themes and styles the hardest one to get my head
around (if anyone knows a good introduction that would be fantastic).
All the other stuff is OK provided I can find something on the net to
give me the necessary information, which so far I usually can.
Christian, I am adopting your suggestion of using ttk widgets, except
for Button objects, because
The colour of tk.Button objects can be set directly (bg=... fg=...)
On my platform (Windows10) the shadowing of tk.Button objects is
more conspicuous (without using styles or whatever).
Best wishes
Rob Cliffe
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