[Tutor] how can a value be retrieved from an event loop?

[Phil]

On 17/11/23 01:12, Alan Gauld via Tutor wrote:
> I was sufficiently intrigued by this that I took another pass
> and added a label to demonstrate how it could be used and
> did the display conversion to degrees too. I hope that it's
> helpful. I also tidied up the code some more.

Thank you Alan, I never thought of using string_var. I was concentrating 
on using "command=on_change" but couldn't get it to work. I'll do a bit 
more research on that later. I have a medical appointment in a couple of 
hours so I don't have time to study your code at the moment.

Thank you again Alan, your time is very much appreciated.

-- 
Regards,
Phil