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+.. highlightlang:: c
+
+.. _cobjects:
+
+CObjects
+--------
+
+.. index:: object: CObject
+
+
+.. warning::
+
+   The CObject API is deprecated as of Python 2.7.  Please switch to the new
+   :ref:`capsules` API.
+
+.. c:type:: PyCObject
+
+   This subtype of :c:type:`PyObject` represents an opaque value, useful for C
+   extension modules who need to pass an opaque value (as a :c:type:`void\*`
+   pointer) through Python code to other C code.  It is often used to make a C
+   function pointer defined in one module available to other modules, so the
+   regular import mechanism can be used to access C APIs defined in dynamically
+   loaded modules.
+
+
+.. c:function:: int PyCObject_Check(PyObject *p)
+
+   Return true if its argument is a :c:type:`PyCObject`.
+
+
+.. c:function:: PyObject* PyCObject_FromVoidPtr(void* cobj, void (*destr)(void *))
+
+   Create a :c:type:`PyCObject` from the ``void *`` *cobj*.  The *destr* function
+   will be called when the object is reclaimed, unless it is *NULL*.
+
+
+.. c:function:: PyObject* PyCObject_FromVoidPtrAndDesc(void* cobj, void* desc, void (*destr)(void *, void *))
+
+   Create a :c:type:`PyCObject` from the :c:type:`void \*` *cobj*.  The *destr*
+   function will be called when the object is reclaimed. The *desc* argument can
+   be used to pass extra callback data for the destructor function.
+
+
+.. c:function:: void* PyCObject_AsVoidPtr(PyObject* self)
+
+   Return the object :c:type:`void \*` that the :c:type:`PyCObject` *self* was
+   created with.
+
+
+.. c:function:: void* PyCObject_GetDesc(PyObject* self)
+
+   Return the description :c:type:`void \*` that the :c:type:`PyCObject` *self* was
+   created with.
+
+
+.. c:function:: int PyCObject_SetVoidPtr(PyObject* self, void* cobj)
+
+   Set the void pointer inside *self* to *cobj*. The :c:type:`PyCObject` must not
+   have an associated destructor. Return true on success, false on failure.