Robert Ramey <ramey <at> rrsd.com> writes:

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Please note BOOST_CLASS_EXPORT_IMPLEMENT is used only once per class (inside polymorphic_derived2.cpp), yet the serializers are inserted in the same map both from the Dll and from the executable.

Am I doing something wrong? Has anyone been able to create a similar working example? I really appreciate any feedback I could get.

It looks like polymorphic_derived2.cpp is being included in both the mainline as well as the DLL.

It's not clear that polymorphic_base needs to be n the DLL and probably shouldn't be.

Make sure that your header includes BOOST_CLASS_EXPORT_KEY and not BOOST_CLASS_EXPORT.

finally, make sure that the test for this facility works.

Robert Ramey

Thank you Robert for your quick response: I appreciate a lot the generous work you put in the library. I double checked the project I previously uploaded: I downloaded it via gmane.org, changed the name back from bin to zip and verified the following: - polymorphic_derived2.cpp file is included only in dll_polymorphic_derived2.vcproj. - there are only three projects dll_polymorphic_derived2, Library and test_dll_exported plus an explicit reference to the bjam files (I removed the latter after downloading); - there is no usage BOOST_CLASS_EXPORT; - there are exactly three declarations of BOOST_CLASS_EXPORT_KEY: one in polymorphic_base.hpp, and two in polymorphic_derved2.hpp one for polymorphic_derived1 and another for polymorphic_derived2. Similarly, there are only three usages of BOOST_CLASS_EXPORT_IMPLEMENT. There was only one question mark: test_dll_exported.vcproj depended on dll_polymorphic_derived2 both via Project Dependencies option and explicitly as an input library: to be on the safe side, I removed the explicit dependency of test_dll_exported on dll_polymorphic_derived2 from the solution. I rebuild the solution from scratch. Unfortunately I got the same exception. So I am still cornered and looking for some help. Thank you again, Bogdan