I've almost finished my first (and big...) Qt app, and first time using Qt Creator (Qt 5.4.0) But one problem remains.
When I stop moving my cursor, this thing appears below, within app window
Once it appears, it disappears only when I start moving it again, just to pop-up immediately when I stop.
I have 2k lines of code and none of it is in any way connected to mousepads. What's that?