///
///Header
///
#include "Box2D\Box2D.h"
class RayCastListener: public b2RayCastCallback
{
protected:
    bool intersectedObject;
public:
    bool ObjectIntersected();
    RayCastListener();
    ~RayCastListener(void);
    float32 ReportFixture(b2Fixture* fixture, const b2Vec2& point,const b2Vec2& normal, float32 fraction);
};
///
///Source
///
#include "RayCastListener.h"

RayCastListener::RayCastListener():intersectedObject(false){}

RayCastListener::~RayCastListener(void){}

float32 RayCastListener::ReportFixture(b2Fixture* fixture, const b2Vec2& point,const b2Vec2& normal, float32 fraction){
    intersectedObject = true;
    return 0.0f;
}

bool RayCastListener::ObjectIntersected(){
    return intersectedObject;
}

///
///To Use
///
RayCasListener *rayCastListener = new RayCastListener(mWorld)
mWorld->RayCast(rayCastListener,startPoint,endPoint);
if(rayCastListener->ObjectIntersected()){
    //hit something
}
delete rayCastListener;