Hi, I have the same scenario, and it's not a problem. If i understand (my english is poor, sorry) well. But there is differences: - I use GCC compilers (but boost is portable). - I use static linking. Probably this differences should not have consequences on the result. I didn't read your code... Had you follow this rules ? - Register child class (a simple way is using the BOOST_CLASS_EXPORT macro). - In the serialize method of your child class, call the serialization of parent's class (optional). I use BOOST_SERIALIZATION_BASE_OBJECT's macro. If you register child class it should be ok... Regards, Damien. Bogdan a écrit :

Hi all,

I am unable to use the following functionality in boost 1.42 built with Visual Studio 2008:

- serialize/deserialize a derived class via a base class pointer using polymorphic archives. - the class serialization is implemented in a DLL using a base polymorphic archive. - the actual serialization is performed in a separate executable (linked with the DLL above); in that executable I use a polymorphic text archive.

The documentation states this scenario is legitimate; however none of the tests shipped with boost demonstrates it (there are examples either about polymorphic classes or polymorphic archives but no test combining both).

The example proving my point is a variation of the test using test_dll_exported.cpp and polymorphic_derived2.cpp where I removed the template-based archives defeating the purpose of polymorphic archives. My example throws an exception before main(), complaining the serializers try to register twice with the archive map singleton of the polymorphic base class.

I described the same issue in the thread "[serialization] Can one deserialize a derived classes via pointers to the base class using polymorphic archives in a DLL context?" I posted in gmane.comp.lib.boost.devel where I provided more implementation details. Robert Ramey has graciously replied with a series of suggestions; unfortunately my example seems to have fulfilled all the conditions he mentioned.

So, my question is: has anyone been able to run successfully a scenario similar to the one I described?

Thank you,

Bogdan

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I am enclosing a bare-bone example containing 8 files in two project files plus one solution file.

My environment setup contains:

_CL_=/D_HAS_ITERATOR_DEBUGGING#0 /D_SECURE_SCL#0 /wd4996 /wd4503 /DBOOST_ALL_NO_LIB BOOST_HOME=C:\_APP_\boost_1_42_0

Boost header files are installed under %BOOST_HOME%\include while the libraries are installed under %BOOST_HOME%\lib. I used Boost libraries (multi-threaded DLL versions) built with no automatic dependencies (note /DBOOST_ALL_NO_LIB above). Their names are boost_serialization-mt.lib and boost_serialization-mt-gd.lib for Release/Debug configurations, respectively.

The PropertyPages/ConfigurationProperties/Debugging/Environment contains: PATH=$(BOOST_HOME)\lib;$(PATH) used while debugging.