I'm trying to use enable_shared_from_this with my classes that have an inheritance structure and a virtual function. I'd like to get a shared pointer to the descendant class B. I get a compile error when I try to dynamic cast the shared ptr of type A to a shared_ptr of type B. See the attached sample. -- sashan http://www.cs.auckland.ac.nz/~sgov008/ #include <iostream> #include using namespace std; using namespace boost; class A : public enable_shared_from_this<A> { public: A(){ cout << "A" << endl; } virtual void f() =0; }; class B : public A { public: B() { cout << "B" << endl;} virtual void f() { shared_ptr<A> pA(enable_shared_from_this<A>::shared_from_this()); shared_ptr<B> pB1(dynamic_pointer_cast < shared_ptr<B> >(pA)); } }; void main() { B b; b.f(); }