On 24 Jan 2013, Felmon Davis told this:
On Thu, 24 Jan 2013, Werner Joss wrote:
hm, plasmoids, well... they are just litte apps which live in the system tray, like the so called mini-applications (kicker-applets) from kde 3.x/TDE. they seem to be easier to develop than full-fledged c++ programs due to the use of QML/javascript as their base.
Werner
ok, I'll have to boot up my kde4 (or reinstall it); I didn't at the time have a sense that the plasmoids were tied to a system-tray' (I take your word for this!) or maybe I'm confusing them with 'activities'.
That would be because they're not tied to a system tray. They can (and do) live on the desktop background, too. (Where, uh, they are normally covered by other windows...)