Re: [Boost-users] Vector of Polymorphic Pointers

From: Robert Ramey (ramey_at_[hidden])
Date: 2006-05-01 20:43:05

I use the vector "children" to hold pointers to both base and derived
objects.  I have tried registering the derived classes at the top of the
serialize function call, with the use of
ar.register(static_cast<ASTNode*>(NULL)).

That is probably the wrong place to put it.  should be in a place that
guarentees that it will be called.  Try it just after the archive is 
created.
If that  does it, you can experiment with moving it around.

 I have also tried using the
BOOST_CLASS_EXPORT_GUID macro to register the classes in main.  Yet, I still
get a unregistered class exception.  Any guidance would be greatly
appreciated.

Note that its not enough to include BOOST_CLASS_EXPORT.  It has to
be included after the *archive.hpp classes that you're using.  Double check
that this is the case.

Robert Ramey