I'm currently trying to polymorphically serialize a class without using
RTTI. I'm doing this currently in a file called StaticText.hpp:
#ifndef
RS_GUI_WIDGETS_STATICTEXT_HPP
#define
RS_GUI_WIDGETS_STATICTEXT_HPP
#include
<boost/scoped_ptr.hpp>
#include
<boost/serialization/access.hpp>
#include
<boost/serialization/base_object.hpp>
#include
<boost/serialization/string.hpp>
#include
<boost/serialization/extended_type_info_no_rtti.hpp>
#include
<boost/serialization/export.hpp>
#include
<rs/gui/widgets/Widget.hpp>
#include
<rs/gui/Text.hpp>
namespace
rs
{
class StaticText : public Widget
{
public:
StaticText( std::string const& text );
void Update();
void Render( RenderSystem& renderer, Camera&
camera );
char const* get_key() const;
private:
StaticText() {}
template< class Archive >
void serialize( Archive& archive, unsigned int version
)
{
archive &
boost::serialization::base_object<Widget>( *this );
std::string text;
archive & text;
m_text.reset( new Text( text )
);
}
boost::scoped_ptr<Text> m_text;
friend class boost::serialization::access;
};
}
BOOST_CLASS_TYPE_INFO(
rs::StaticText,
extended_type_info_no_rtti<rs::StaticText>
)
BOOST_CLASS_EXPORT( rs::StaticText
)
#endif //
RS_GUI_WIDGETS_STATICTEXT_HPP
When I compile this into a LIB first, and then link the lib into an EXE,
the linker says this (Visual Studio 2008):
gui.lib(StaticText.obj) : error LNK2005: "public: static struct
boost::archive::detail::guid_initializer<class rs::StaticText> const
& const boost::archive::detail::init_guid<class
rs::StaticText>::guid_initializer"
(?guid_initializer@?$init_guid@VStaticText@rs@@@detail@archive@boost@@2ABU?$guid_initializer@VStaticText@rs@@@234@B)
already defined in main.obj
If I move the 2 macro calls into the
StaticText.cpp file, everything compiles/links just fine but I end up getting
an exception thrown at runtime that says "unregistered void cast".