[C++-sig] How to create and return a new instance of a Python Exported C++ class.

[Ralf W. Grosse-Kunstleve]

--- pj <pjdurai at hotmail.com> wrote:
> class BB
> {
>     GetMeAA ( )
>     {
>         // When called from python this needs to create and return a
> Python-AA object.
>     }
> };
> 
> 
> How would I write this member function, and how would I export it ?
> I suspect I am missing something rudimentary. But no clue yet to what.

Unless I am missing something: it is all automatic. Just make your member
function complete:

  AA GetMeAA() { return AA(); }

Then

  class_<BB>("BB", ...)
    .def("GetMeAA", &BB::GetMeAA)
  ;

Boost.Python generates all the wrapping/unwrapping code for you. You don't have
to think about it unless you are dealing with raw pointers or want to avoid
using AA's copy constructor.

Ralf


__________________________________
Do you Yahoo!?
The New Yahoo! Search - Faster. Easier. Bingo.
http://search.yahoo.com