Re: Wrong constructor invoked in Boost.Python

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

So...

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 
available
        c:\boost_1_23_0\boost/python/reference.hpp(51) : while 
compiling class-template member function '__thiscall 
boost::python::reference<struct 
_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?