For a stroke event to occur, it needs a stroke header, as well as a stroke point:

Code:
<StrokeEvent>
 <StrokeHeader>
  <EventPt> Wait: 0.000s Loc: (x, y) Pr: 1 Ti: 1 Ro: 0 Rv: NO Iv: NO </EventPt>
 </StrokeHeader>
 Wait: 0.000s Loc: (x, y) Pr: 1 Ti: 1 Ro: 0 Rv: NO Iv: NO
</StrokeEvent>
Give that a whirl.