Shouldn't there be some "decl" statements in here? There is a test in the package test_dll_exported... Perhaps you might check to see that that test works with your setup. I'm now in the process of adding tests for this functionality for version 1.40 . Can't promise I'll make the deadline though. Robert Ramey Christian Bergstrand wrote:
I am working on a programwith pluggable classes delivered in DLLs, so I have an virtual abstract base class in my EXE and both abstract and concrete classes in a hiearchy in my first DLL. I am trying ot serialize the derived class instances through a base class pointer. I am not able to get it to work after reading the samples in the documentation and the most likely looking threads here.
So I broke it down in to a sample EXE/DLL and can still not get it to work. I am using version 1_38 currently, also tried with 1_36_0
I am getting the exeption on oserializer.hpp:374 where the comment says // note:if this exception is thrown, be sure that derived pointer // is either registered or exported.
In my opinion I am exporting my derived class, but I am feeling that it is probably going into the wrong instance, since the export code is going into the DLL, but I can not find any other recomendation.
So what am I missing ...
------------------------ serializedll\base.h ------------------------ #pragma once
class Base { public: virtual void f() = 0; private: friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int version) { } }; BOOST_SERIALIZATION_ASSUME_ABSTRACT( Base )
------------------------ serializedll\serializedll.cpp, in the EXE ------------------------ #include
#include #include <fstream>
#include
#include #include "base.h"
int _tmain(int argc, _TCHAR* argv[]) { typedef Base * ( GetObjFun )(); GetObjFun * f = (GetObjFun*)GetProcAddress( LoadLibrary( TEXT( "plugin.dll" ) ), "getobj" ); Base * obj = f();
std::ofstream ofs( "c:\\test.xml" ); boost::archive::text_oarchive oa(ofs);
oa << obj;
return 0; }
------------------------ plugin\plugin.cpp, in the DLL ------------------------ #include
#include
#include #include "../serializedll/base.h"
BOOL APIENTRY DllMain( HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserved ) { return TRUE; }
class Derived : public Base { public: virtual void f() { } private: friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int version) { ar & boost::serialization::base_object< Base >( *this ); } };
BOOST_CLASS_EXPORT( Derived )
Base * getobj() { return new Derived(); }