text: #ifndef StEventToolkit_h
  #define StEventToolkit_h
  
  class StEvent;
  class StSPtrVecTrackNode;
  
  class StEventToolkit {
  private:
    StEventToolkit(){ mEvent = 0;}
   public:
  static StEventToolkit* instance();
  void SetEvent(const StEvent *evt) 	{mEvent = evt;}
  
  const StSPtrVecTrackNode* getTrackContainer();
  
  private:
  const StEvent *mEvent;
  };
  #endif
  