The example in Chapter 5 of the BGL User Guide and Ref Manual book, edge weights are assigned floats as follows: // The transmission delay values for each edge. float delay[] = {5.0, 1.0, 1.3, 3.0, 10.0, 2.0, 6.3, 0.4, 1.3, 1.2, 0.5}; Running the code with Borland C++ 5.6.4 for Win32, raises the following error in property_map.hpp: "property_map.hpp": E2406 Dependent type qualifier 'float *' is not a class or struct type in function detail::bool bellman_dispatch<edge_list<_STL::pair<int,int>*,_STL::pair<int,int>,int, _STL::random_access_iterator_tag>,int,const iterator_property_map<float *,el_ra_edge_property_map<int>, float,float &>,float * const,int *,vertex_predecessor_t,bgl_named_params<float *,vertex_distance_t,bgl_named_params<iterator_property_map<float *,el_ra_edge_property_map<int>,float,float &>, edge_weight_t,no_property> > >(edge_list<_STL::pair<int,int> *,_STL::pair<int,int>,int,_STL:: random_access_iterator_tag> &,int,iterator_property_map<float *,el_ra_edge_property_map<int>, float,float &>,float *,const bgl_named_params<int *,vertex_predecessor_t,bgl_named_params<float *, vertex_distance_t,bgl_named_params<iterator_property_map<float *,el_ra_edge_property_map<int>, float,float &>,edge_weight_t,no_property> > > &) at line 26 Please advise. Best Regards _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost --------------------------------- Do you Yahoo!? vote.yahoo.com - Register online to vote today!