I was frustrated a few days ago to find out that I can’t take screenshots of a part of the screen under KDE using Gimp. I will probably never find out why. But I found out how to make a screenshot without Gimp with KDE.
How do I make a screenshot with KDE?
Screenshot of the whole screen: Press shift and print at the same time.
Screenshot of the current window: Press Windows key and print at the same time.
Screenshot of a part of the screen: Press shift, Windows and print keys simultaneously.