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_______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

is the following snipped what you have in mind?

struct base {}; struct derived1 : public base {}; struct derived2 : public derived1 {};

typedef boost::shared_ptr<base> base_ptr;

struct monitor { void add( const base_ptr & _ptr) { // ... } };

struct factory { factory( monitor & _monitor ) : monitor_(_monitor) { }

template<typename T> boost::shared_ptr<T> create( void ) { boost::shared_ptr<T> tmp(new T); monitor_.add(tmp); return tmp; }

private: monitor & monitor_; };

void foo( void ) { monitor m; factory f(m); f.create<derived1>(); f.create<derived2>(); }

-- dave _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

Hi Dave, Yes, I think that pretty much does exactly what I require. And gives me a (almost comnpletely) generic factory class to boot! Thanks very much! James