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#ifndef G4UserEventAction_h
#define G4UserEventAction_h 1

class G4EventManager;
class G4Event;

// class description:
//
//  This is the base class of one of the user's optional action classes.
// The two methods BeginOfEventAction() and EndOfEventAction() are invoked
// at the beginning and the end of one event processing. These methods are
// invoked by G4EventManager.
//  Be aware that BeginOfEventAction() is invoked when a G4Event object is
// sent to G4EventManager. Thus the primary vertexes/particles have already
// been made by the primary generator. In case the user wants to do something
// before generating primaries (i.e., store random number status), do it in
// the G4VUserPrimaryGeneratorAction concrete class.
//

class G4UserEventAction 
{
  public:
      G4UserEventAction();
      virtual ~G4UserEventAction();
      virtual void SetEventManager(G4EventManager* value)
      { fpEventManager = value; }
  public: // with description
      virtual void BeginOfEventAction(const G4Event* anEvent);
      virtual void EndOfEventAction(const G4Event* anEvent);
      // Two virtual method the user can override.
  protected:
      G4EventManager* fpEventManager;
};

#endif

