Re: [Boost-users] [BGL] Color Maps

// Calling DFS with named parameters depth_first_search(*g, visitor(actions), root_vertex(source));

The named parameter DFS only takes two parameters - sort of. The graph and a named_params composition. You probably need to write: dfs(*g, visitor(actions).root_vertex(source)); Note the "." instead of a ",". Andrew Sutton andrew.n.sutton@gmail.com