[Boost-users] Boost.Function - boost::function2 - too few template arguments

Hi! Trying to use Boost.Function - boost::function2 such a way: #include <boost/function.hpp> typedef unsigned int mnUserId_c; typedef boost::function2<int, mnUserId_c*> myfunctype; .. end get error "boost::function2 - too few template arguments" XPSP2, Visual Studio 2008. Any ideas?