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I'm looking for an abstract factory for class templates, where the classes register themselves automatically at static initialization time. For regular (non-templated) classes, the solution is straightforward enough using static members. Here's an example of a (rather simplistic) solution that works just fine: #include <cassert> #include <iostream> class Base { public: virtual size_t id() const = 0; virtual const char* name() const = 0; virtual ~Base() {} }; typedef Base* (*CreateFunc)(void); class SimpleFactory { private: static const size_t NELEM = 2; static size_t id_; static CreateFunc creators_[NELEM]; public: static size_t registerFunc(CreateFunc creator) { assert(id_ < NELEM); assert(creator); creators_[id_] = creator; return id_++; } static Base* create(size_t id) { assert(id < NELEM); return (creators_[id])(); } }; size_t SimpleFactory::id_ = 0; CreateFunc SimpleFactory::creators_[NELEM]; class D1 : public Base { private: static Base* create() { return new D1; } static const size_t id_; public: size_t id() const { return id_; } const char* name() const { return "D1"; } }; const size_t D1::id_ = SimpleFactory::registerFunc(&create); class D2 : public Base { private: static Base* create() { return new D2; } static const size_t id_; public: size_t id() const { return id_; } const char* name() const { return "D2"; } }; const size_t D2::id_ = SimpleFactory::registerFunc(&create); int main() { Base* b1 = SimpleFactory::create(0); Base* b2 = SimpleFactory::create(1); std::cout << "b1 name: " << b1->name() << "\tid: " << b1->id() << "\n"; std::cout << "b2 name: " << b2->name() << "\tid: " << b2->id() << "\n"; delete b1; delete b2; return 0; } The question I have is how to make it work when the stuff I want to register/create is more like:

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