1.. highlightlang:: c 2 3.. _cobjects: 4 5CObjects 6-------- 7 8.. index:: object: CObject 9 10 11.. warning:: 12 13 The CObject API is deprecated as of Python 2.7. Please switch to the new 14 :ref:`capsules` API. 15 16.. c:type:: PyCObject 17 18 This subtype of :c:type:`PyObject` represents an opaque value, useful for C 19 extension modules who need to pass an opaque value (as a :c:type:`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 23 loaded modules. 24 25 26.. c:function:: int PyCObject_Check(PyObject *p) 27 28 Return true if its argument is a :c:type:`PyCObject`. 29 30 31.. c:function:: PyObject* PyCObject_FromVoidPtr(void* cobj, void (*destr)(void *)) 32 33 Create a :c:type:`PyCObject` from the ``void *`` *cobj*. The *destr* function 34 will be called when the object is reclaimed, unless it is *NULL*. 35 36 37.. c:function:: PyObject* PyCObject_FromVoidPtrAndDesc(void* cobj, void* desc, void (*destr)(void *, void *)) 38 39 Create a :c:type:`PyCObject` from the :c:type:`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. 42 43 44.. c:function:: void* PyCObject_AsVoidPtr(PyObject* self) 45 46 Return the object :c:type:`void \*` that the :c:type:`PyCObject` *self* was 47 created with. 48 49 50.. c:function:: void* PyCObject_GetDesc(PyObject* self) 51 52 Return the description :c:type:`void \*` that the :c:type:`PyCObject` *self* was 53 created with. 54 55 56.. c:function:: int PyCObject_SetVoidPtr(PyObject* self, void* cobj) 57 58 Set the void pointer inside *self* to *cobj*. The :c:type:`PyCObject` must not 59 have an associated destructor. Return true on success, false on failure. 60