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Python

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CObjects — Python v2.6.2 documentation

CObjects¶

Refer to Providing a C API for an Extension Module for more information on using these objects.

PyCObject¶
This subtype of PyObject represents an opaque value, useful for C extension modules who need to pass an opaque value (as a 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.
int PyCObject_Check(PyObject *p)¶
Return true if its argument is a PyCObject.
PyObject* PyCObject_FromVoidPtr(void* cobj, void (*destr)(void *))¶
Return value: New reference.

Create a PyCObject from the void * cobj. The destr function will be called when the object is reclaimed, unless it is NULL.

PyObject* PyCObject_FromVoidPtrAndDesc(void* cobj, void* desc, void (*destr)(void *, void *))¶
Return value: New reference.

Create a PyCObject from the 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.

void* PyCObject_AsVoidPtr(PyObject* self)¶
Return the object void * that the PyCObject self was created with.
void* PyCObject_GetDesc(PyObject* self)¶
Return the description void * that the PyCObject self was created with.
int PyCObject_SetVoidPtr(PyObject* self, void* cobj)¶
Set the void pointer inside self to cobj. The PyCObject must not have an associated destructor. Return true on success, false on failure.
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