intelliSense 'No members available'

Question

using inheritence and generic in c++ ,this problem appeared to me: this is my abstract base class

    template<class Type>
struct A
{
Type info;
};
template<class Type>
class base
{
protected:
     A<Type>* ptrA;
public:
    virtual void func(Type X) = 0;
    void func(Type X) 
     {
         ptrA->info = x;         //no Errors occured
     }
};

and this is the derived

template<class Type>
class derived : class base<Type>
{
public:
  void func(Type X)
  {
    ptrA-> info  = x ;       // this is the problem 

  }
};

the problem appeared to me at the function definition of the derived class : that i cannot access the member that ptrA refrenced ,,, any help ,please