on Sat Jan 17 2009, "Sebastian Walter" <walter-AT-mathematik.hu-berlin.de>
wrote:
> Hello,
>
> I want to call a Python function from C++ with an object of a C++ class
> as argument.
> The Python-function should change the argument, so changes are visible
> on the C++ side.
> Boost::Python automatically makes a copy of all the arguments that are
> passed to a callable Python object.
>
> Is there a way NOT to copy all arguments??
>
> void my_test_function(object fun_obj){
> A a;
> cout<<"a.x="<<a.x<<endl;
> fun_obj(a);
fun_obj(boost::ref(a))
^^^^^^^^^^^ ^
> cout<<"a.x="<<a.x<<endl;
> }
HTH,
--
Dave Abrahams
BoostPro Computing
http://www.boostpro.com
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