public void InvokeDrawingZone(DrawingZone abs, DrawingMattStates currentState)
 {
     var safteyNet = DrawingStateChange;
     if (safteyNet != null)
     {
         safteyNet(abs, new DrawingZoneEventArgs(currentState));
     }
 }
 public DrawingZoneEventArgs(DrawingMattStates e)
 {
     CurrentStateChange = e;
 }