Hicham Mouline wrote:

Hello, I am unclear about registration and export.

I have this public single-derivation hierarchy

B

...

\ \ D1 D2 D3

D11

The 5 structs are non abstract.

Then shouldn't need to register nor export anything.

I will want to serialize (save) const B* and load it back with the serialization lib constructing for me (on the heap) the right object.

then it should polymorphic - i.e. have at least one virtual function.

Did I understand right that the library does this for me?

yes

Does it construct the object on the heap?

yes

I export the 5 structs with the macro BOOST_CLASS_EXPORT_GUID(ns::B, "B") at global namespace level.

yes, but you would only need to apply this to the 4 derived classes

Do I have to register them too?

no, it's either register or export. They are alternatives

template <class Archive> void serialize(Archive &ar, ns::B&, const unsigned int version) { ar.template register_type<D1>(); ar.template register_type<D2>(); ar.template register_type<D3>(); ar.template register_type<D11>(); }

the above would be fine.

or do I register for each class only the immediate derived?

you should need to do this (export or register) only for the "leaf" classes. Robert Ramey

regards,