[C++-sig] enums and structs

[David Abrahams]

----- Original Message -----
From: "Achim Domma" <achim.domma at syynx.de>


> Hi,
>
>  in ./test/comprehensiv.cpp I found the following example for
>  exposing enums:
>
>  namespace boost { namespace python {
>    template class enum_as_int_converters<bpl_test::EnumOwner::enum_type>;
>    using bpl_test::pow;
>  }} // namespace boost::python
>
>  in Daves progress report from march he mentioned a new interface
>  for exposing enums.

Yes, as described in
http://mail.python.org/pipermail/c++-sig/2002-April/000907.html


> Is the code above the right one

No, the above is a v1 interface.

> or will the
>  interface change in V2 ?

The link tells all.

> comprehensive.cpp was the only example
>  concerning enums I could find in the testfolder.

You can always use the following until we get the nice interface:

    module("my_module")
        .setattr("enum_value_1", PyInt_FromLong(enum_value_1))
        ...

>  I also have to expose structs with char* members. Is that
>  possible ?

Why not?

> It would be no problem to make a copy of the string
>  passed from python, but how/when will this copy be destroyed ?

I don't understand what you mean, sorry. Are you concerned about how to
*construct* these structs, or is it something else?

-Dave

>  greetings
>  Achim
>
>  PS.: I'm trying to make ImageMagick accessible from Python, which
>  is much more work than I expected, but I'm also learning much
>  more than I expected! ;-)

Nifty!

-Dave