Re: [Boost-users] BGL Properties

You need to specify the vertex properties as empty (something like "no_property" IIRC). You did specify the edge weight as the parameter of the VertexProperties, but it should look like this: adjacency_list

The g++-4.3.4 output contains something like "Value = boost::detail::error_property_not_found" which tells you that some property was not available while you tried to access it.

Cedric, Ah, thanks. One problem was I was indeed trying to specify the edge property type in the template parameter for the vertex property type. Now I am trying to simply assign a property to a vertex. I have: typedef boost::property VertexProperty; // a double property typedef boost::adjacency_list Graph; int main(int,char*[]) { // Create a graph object Graph g(3); boost::add_vertex(g); boost::property_map::type value = get(VertexProperty(), g); boost::put(value, 0, 1.2); } On the property_map call, I get an "error: invalid use of void expression" What is wrong with this? Thanks for your help so far, David