[boost] [BGL] Help Needed

From: Wang Weiwei (wwwang_at_[hidden])
Date: 2006-07-13 01:03:30

>
>
>>I have yet to be able to use edge descriptors as keys
>>to external property maps.  Try using internal
>>property maps.
>>
>>                              Cromwell D. Enage
>>
>
>Thanks for your help. Would you pls give me an example 
>showing the usage of internal property map for the vertices
>and edges?

or, to make the question simpler, how to declare a adjacency_list type 
graph object with internal vertex/edge property maps as follows:

vertex descriptor -> MyVpmType
edge descriptor -> MyEpmType

And how to access the internal maps to do sum get/put operation?

>
>Thanks again.
>
>max