Hi ,
Can someone can give me some help on how to expose correctly an array
of object pointers using boost.python ?
here is a small example of what i need
i have a class
class A
{
public:
A(std::string &oName);
~A(){}
const std::string &GetName() const;
}
class B
{
std::vector<*A> *poNames
public:
std::vector<*A> GetNames() { return *poNames }
}
assume that there is two instances of A in the container of the object B
now for the boost::python code. I would like to be able to expose class
a and class b and the vector of A*
typedef std::vector array_proj;
array_proj::iterator begin_array_proj(array_proj &x) {return x.begin();}
array_proj::iterator end_array_proj(array_proj &x) {return x.end();}
BOOST_PYTHON_MODULE(pysession)
{
class_<A>("object a",init() )
;
class_<B>("object B")
.def("GetNames", &B::GetNames,
return_value_policy() )
;
class_ >("array of pointer to objects A")
.def("__iter__", range( begin_array_proj, end_array_proj) )
;
}
Now in python for example I call
#create a new object B
#and iterate over all of the object A
#assume that there are two object of type A in the vector
oNewSession = pysession.B()
oVector = oNewSession.GetNames()
for oA in oVector.__iter__():
print (oA.GetName())
i have this error when i start the python script
for oA in oVector.__iter__():
TypeError: No to_python (by-value) converter found for C++ type: class
::A *
Does someone can give me some help on how to expose correctly an array
of pointers using boost.python ?
CT