分类： C/C++
2014-05-03 22:42:21
以导出类CObject为例
struct CObject
{
void* m_pData;
PyObject* m_pObj;
void fun(){printf("CObject::fun()");};
};
1，定义一个PY结构
struct PY_CObject
{
PyObject_HEAD;
CObject* obj;
};
2，定义构造、初始化、析构函数
static PyObject* PY_CObject_new(PyTypeObject* type,PyObject*,PyObject*)
{
PY_CObject* self=(PY_CObject*)type->tp_alloc(type,0);
self->obj=NULL;
return self;
}
static int PY_CObject_init(PY_CObject*s,PyObject*,PyObject*)
{
s->obj=new CObject;
s->obj->m_pObj=s;
return 0;
}
static void PY_CObject_dealloc(PY_CObject* s);
{
s->ob_type->tp_free(s);
delete s->obj;
s->obj=NULL;
}
3，定义其它成员函数和函数数组
static PyObject* Py_CObject_fun(PY_CObject* self)
{
self->obj->fun();
return Py_None;
}
static PyMethodDef Py_CObject_Methods[]=
{
{"fun", Py_CObject_fun,METH_NOARGS,"fun"},
{0,0,0,0}
}
4，定义导出结构
PyTypeObject PY_CObject_Type=
{
PyObject_HEAD_INIT(NULL)
0,
"CObject",//tp_name
...
PY_CObject_new,
PY_CObject_int,
PY_CObject_dealloc,
Py_CObject_Methods,
...
}
5，导出
voidPy_CObject_Add()
{
Py_Initialize();
PyObject* pUserModules=Py_InitModule("MyPython", NULL);
if (PyType_Ready(&PY_CObjectType)<0) return;
Py_INCREF(&PY_CObject);
PyModule_AddObject(pUserModules, "CObject", &PY_CObject_Type);
}
这样在py文件里面就可以使用CObject了
/*test.py begin*/
#coding=utf-8
import MyPython
def Start:
obj=CObject()
obj.fun()
/*test.py end*/
6，执行test.py
PyObject* pModule=PyImport_ImportModule("test");
PyObject* pFunc=PyObject_GetAttrString(pModule, "Start")
PyEval_CallObject(pFunc,NULL);
这样控制台会打印：CObject::fun()
