Hello.


I have just been looking recently at the subgraph feature of the BGL.
If I understand correctly, in order to use it you *must* first create
a root subgraph; you can't use an existing Graph as the root and call
create_subgraph on that adjacency_list, for example.


It also seems like when you create a subgraph, it is somehow stored on
the root subgraph, since
<fontfamily><param>Courier</param><x-tad-bigger>create_subgraph() has
a return type of subgraph<<Graph>&.


</x-tad-bigger></fontfamily>As it returns a reference, I assume that
the actual object is somehow stored on the root. But I need to create
and delete lots of subgraphs on a given root graph. Creating the
subgraph is no problem; however how can I deleted them ??? I could
just leave them, of course, but that's an obvious waste of resources...


Is there an answer to my question? If possible, I'd also like to learn
a little bit more about the subgraph implementation (all I can suppose
from the documentation is that it is stored in some kind of tree
data-strucutre).


Last, could someone make an announcement about when bundled properties
will be available for subgraph, either in the CVS or in a minor
revision to the BGL ? (I think someone suggested that idea in oprder
to fix problematic bugs like the remove_edge fail...)

I absolutely need soon the subgraph implementation of bundled
properties, so as soon as it's in the CVS i'll have to fetch it.


Thank you,


Jean-Noël

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