I am having trouble while using multi index container with the "managed c++" component. Here is the typedef that the compiler won't accept.

typedef 
multi_index_container<
  gcroot<interface_entity*>,

  indexed_by<
    ordered_unique<
identity<gcroot<interface_entity*> > >,
    ordered_non_unique
<member<gcroot<interface_entity*>
, int,&interface_entity::entity_drawingid
> >,
  >
> entity_collection;

The real deal is with the member template which needs the address of member variable of the interface_entity class. Entity class is an abstract Managed type (specified with __gc), and it is not allowed to take the address of a non-static member of a managed type.

Does anybody know of a workaround?

Thanks
Parag