There were two problems: 1) QWidget does not have a default size of (0,0)
or (1,1), but uses WA_Resized. 2) event() would eat timer events without
checking the timerId.

Change-Id: I355acbb10d3d5073e117c29de18bb94857881141
Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>