It's the default on Unix systems, but the guys over at Redmond, WA
seem to think different.

On Windows event.key() always returns the key code regardless
of the modifiers that where used, unlike Linux. On Windows both 3 and
Shift+3 give a 51 code, whereas on Linux 3 gives 51 but Shift+3 gives 35.
So, lets use the unicode representation of the typed charcter.