Summary of bug description
   * actual behaviour
   KeyEvent is not derived from mitkEvent so information (e.g. position on screen) gets lost along the event mechanism
   * expected behaviour
   KeyEvent is derived from mitkEvent and we can use all information    
 
Cause of the bug
In mitkEventTypedefs.h the mitkKeyEvent and its superclass mitkBaseEvent is defined. Other interaction events are derived from mitkEvent.

Proposed solution
Dissolve mitkEventTypedefs.h and create a new class mitkKeyEvent which is derived from mitkEvent. Adapt the KeyPressEvent() method in mitkBaseRenderer.

Affected classes

mitkEventTypedefs.h
mitkBaseRenderer


How will the bugfix get tested?
unit test for the new key event class