problem with induced subgraphs

From: David Minor david-m_at_[hidden])
Date: 2003-02-17 07:28:41

I'm using an edge visitor to create subgraphs.  I do a simple
sub_graph = myGraph.create_subgraphs(), to create a subgraph and then
I add vertices using add_vertex(vertex,sub_graph). The vertices are
added but the corresponding edges are not. My basic typedefs are:
//////////
    typedef  boost::property<boost::edge_index_t, int> Tmp;
    typedef  boost::property<boost::edge_info_t, GES_EdgeInfo, Tmp>  
      GES_EdgeProperty;
    typedef  boost::property<boost::vertex_color_t, int> Tmp2;
    typedef  boost::property<boost::vertex_self_t, SYS_String, Tmp2> Tmp3;
    typedef  boost::property<boost::vertex_name_t, SYS_String, Tmp3> 
      GES_VertexProperty;
    typedef  boost::adjacency_list<  boost::vecS, boost::vecS
                                    ,boost::directedS
                                    ,GES_VertexProperty
                                    ,GES_EdgeProperty>               
      GES_AdjacencyList;
    typedef  boost::subgraph<GES_AdjacencyList>                      
      GES_RTGraph;
//////////
That is, the graph type is the same as the sub-graph type, which I
think is right?  Does anybody have any idea why the edges aren't being
transferred to the sub-graph?