[C++-sig] Re: Call policy with constructor

[Mike Rovner]

Pierre Barbier de Reuille wrote:
> I want to define a constructor that takes a pointer a keep a reference
> on it. So I need a call policy like 'with_custodian_and_ward<1,2>()'.
>
> But it fails at compile time. Here's me Boost.Python code :
>
> class_<RCPtr<Class> >(name, doc, init<optional<Class*> >())
>       .def(init<RCPtr<Class> >())
>       .def( init<Class*>(), with_custodian_and_ward<1,2>() )
>       ;

You have to use different syntax:

      .def( init<Class*>()[with_custodian_and_ward<1,2>()] )

See reference at www.boost.org/libs/python/doc/v2/init.html#init-spec

Mike