title: How to close the completion tooltip, without closing the compile output pane in QtCreator
body: <p>When I'm writing code with QtCreator (2.4.1), I'm very often in this situation: something is wrong with my code, e.g a bad argument in a constructor. The error is reported in the compile output.
  Then I jump to the line to modify my code: once inside the constructor, QtCreator displays a tooltip, which most of the time, hides something on the previous lines. And most of the time, I need to read something on the previous line.  The only way to close this tooltip (with the keyboard only), is to hit ESC. By doing this, the compile output is also closed, and the geometry of the editing pane also changes, which is disorienting.
  Am I missing something ?</p>