Based on those classes it looks like this app uses some sort of framework like this one:
Yes, its XBase++ - Wikipedia
All I see there is that idx that could maybe point to a specific cell?
Seems like a very unfriendly app to automate using UI alone ( or maybe there isn’t a package yet for it ).
You could also try Screen scraping for Desktop and see if it generates some useful info?
If nothing else works you could also try to interact directly with the database, like so, but it seems it is not a free option unfortunately :