8 .. index:: object: CObject
13 The CObject API is deprecated as of Python 3.1. Please switch to the new
18 This subtype of :ctype:`PyObject` represents an opaque value, useful for C
19 extension modules who need to pass an opaque value (as a :ctype:`void\*`
20 pointer) through Python code to other C code. It is often used to make a C
21 function pointer defined in one module available to other modules, so the
22 regular import mechanism can be used to access C APIs defined in dynamically
26 .. cfunction:: int PyCObject_Check(PyObject *p)
28 Return true if its argument is a :ctype:`PyCObject`.
31 .. cfunction:: PyObject* PyCObject_FromVoidPtr(void* cobj, void (*destr)(void *))
33 Create a :ctype:`PyCObject` from the ``void *`` *cobj*. The *destr* function
34 will be called when the object is reclaimed, unless it is *NULL*.
37 .. cfunction:: PyObject* PyCObject_FromVoidPtrAndDesc(void* cobj, void* desc, void (*destr)(void *, void *))
39 Create a :ctype:`PyCObject` from the :ctype:`void \*` *cobj*. The *destr*
40 function will be called when the object is reclaimed. The *desc* argument can
41 be used to pass extra callback data for the destructor function.
44 .. cfunction:: void* PyCObject_AsVoidPtr(PyObject* self)
46 Return the object :ctype:`void \*` that the :ctype:`PyCObject` *self* was
50 .. cfunction:: void* PyCObject_GetDesc(PyObject* self)
52 Return the description :ctype:`void \*` that the :ctype:`PyCObject` *self* was
56 .. cfunction:: int PyCObject_SetVoidPtr(PyObject* self, void* cobj)
58 Set the void pointer inside *self* to *cobj*. The :ctype:`PyCObject` must not
59 have an associated destructor. Return true on success, false on failure.