[Boost-users] does ptr_* solves this?

Hi, I have an heterogeneous container holding pointers to objects of type B. I want to insert objects of type D1,D2,... that derive from B, and I want to do that using a custom stl like allocator, for example: B* obj = my_alloc<D>::allocate(1); obj = new (obj) B(); container.insert(obj); My problem is that when an object is removed from the container, I have to explicitely deallocate it from my allocator, but the static info was lost, so I cannot do my_alloc::deallocate(1,oj); I've asked in boost irc channel, and someone told me ptr_* boost libraries solve this problem, is this correct? thanks -- Marco Correia