I've been looking (without much success) for some kind of tutorial
about how to write 'widgets' for a current KDE task bar.
[I found the old widgets for clock, weather, etc. back on old KDE
back in Fedora 8 days MUCH better designed, more user friendly
more featured and more useful than those supplied today. IMHO]

So I want to re-create some of those old widgets (
​as ​
plasmoids?) to
make my life less frustrating now that I have to use newer Fedoras.

Where does anyone suggest I find such docs?