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From: VesselinPeev_at_[hidden]
Date: 2001-07-30 02:38:02


Uncommenting only the declaration and definition of the default
constructor without arguments in both class A and B in the source I
gave in my previous post, you should get:

c:\boost_1_23_0\boost/python/reference.hpp(53) : error C2512:
'py_ptr_conversions<class boost::python::reference<struct
_object>,struct _object,struct boost::dereferenceable<class
boost::python::reference<struct _object>,struct _object *,class bo
ost::detail::empty_base> >' : no appropriate default constructor
        c:\boost_1_23_0\boost/python/reference.hpp(51) : while
compiling class-template member function '__thiscall
_object>::boost::python::reference<struct _object>(const class

boost::python::reference<struct _object> &)'
Error executing cl.exe.

QS.obj - 1 error(s), 0 warning(s)

Note that you need to do the above for both classes, or the precisely
same error will pop up.

BTW I've tested the examples getting_started1 and getting_started2,
and they run without problems.
I've also noticed that none of the constructor(s) of the derived class
(es) in them call the base class' constructor. So this seems the
cause, but I don't know how to fix it.

Thanks in advance once again.

--- In boost_at_y..., "David Abrahams" <david.abrahams_at_r...> wrote:
> ----- Original Message -----
> From: <VesselinPeev_at_o...>
> >
> > Why is this happening? I am also forced to define the default
> > constructors without arguments, othewise I get compile errors.
> What compile errors do you get?

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