[Boost-users] write_graphviz requires not only VertexListGraph, but also EdgeListGraph

Hi everybody, this is my first post to the boost mailing list. I'm using boost_1_39 I wanted to use write_graphviz today with my custom graph adapter that implements VertexListGraph as well as IncidenceGraph. The documentation states, that write_graphviz only requires a VertexListGraph. But inside, it uses an edge_iterator, and calls edges(g), both of which belong to the EdgeListGraph. Am I right here, or did I miss something? If yes, should I implement a specialization that only calls out_edges() for every vertex, and thus a VertexListGraph would be sufficient? With kind regards Richard