template<typename T>
    class HookPointer
    {
    public:
        HookPointer() : m_obj(0), m_ptr(0) {}
        HookPointer(QObject *obj) : m_obj(obj), m_ptr(qobject_cast<T*>(obj)) {}
        HookPointer(const HookPointer<T> &that) : m_obj(that.m_obj), m_ptr(that.m_ptr) {}
        ~HookPointer() {}

        HookPointer &operator =(const HookPointer<T> &that)
        {
            m_obj = that.m_obj;
            m_ptr = that.m_ptr;
            return *this;
        }
        HookPointer &operator =(QObject *obj) { return operator =(HookPointer(obj)); }

        T *operator ->() { return m_ptr; }
        operator QObject *() const { return m_obj; }
        operator T *() const { return m_ptr; }
        operator bool() const { return m_obj != NULL; }

        inline QObject *object() const { return m_obj; }
        inline T *pointer() const { return m_ptr; }
    private:
        QObject *m_obj;
        T *m_ptr;
    };