demetor

class IObject
{
public:
   virtual void create(void** ret_val) = 0;
   virtual std::string name() const = 0;
};

template <typename _Type>
class ObjectT : public IObject
{
protected:
    static std::string m_name;
public:
    void create(void** ret_val)
    {
        *ret_val = (void*) new _Type;
    }
};

typedef ObjectT<bool> BoolObject;
typedef ObjectT<int>    IntObject;

template<> std::string BoolObject::m_name = "bool";
template<> std::string IntObject::m_name = "int";

BoolObject bobj;
IntObject iobj;
std::vector<IObject*> my_vector;
my_vector.push_back (&bobj);
my_vector.push_back (&iobj);

if (my_vector[n].name() == "bool") {
   bool* pval = nullptr;
   my_vector[n].create((void**) &pval);
   *pval = true;
}