[C++-sig] Re: Inheritance with B/P

[Bruce Lowery]

--- Mike Rovner <mike at bindkey.com> wrote:
> "Bruce Lowery" <bruce_lowery at yahoo.com> wrote in message
> > > >> d = mod.Derived()
> > > >> s = mod.SomeOther()
> > > >> s.someOther( d )
> > > > TypeError:  bad argument type for built-in operation
> > > >>
> > > >
> > > > In reality, the wrappers "hold" Base and Derived using auto_ptr:
> > > >
> > > > class_< Base, auto_ptr<Base> >(...) ...;
> > > > class_< Derived, auto_ptr<Derived>, bases<Base> >(...) ...;
> > > >
> > > > Any ideas?
> 
> For me it's look like a C++ problem not a Python problem.
> auto_ptr<Derived> is not inherited from auto_ptr<Base> and/or
> there is no automatic conversion from former to later.
> 

Well, I've built the simplified version I gave previously, including the use of
auto_ptr to 'hold' the classes, and it appears to work.  So, it's something
else, likely screened from detection by its obviousness....

Thanks for wasting time thinking about this.

Bruce Lowery

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