Pass a tuple (or list) to a C wrapper function

[Java and Swing]

Fredrik,
  ...I tried using your code...

static long *get_long_array(PyObject *data, int *data_size) {
    int i, size;
    long* out;
    PyObject* seq;

    seq = PySequence_Fast(data, "expected a sequence");
    if (!seq)
        return NULL;

    size = PySequence_Size(seq);
    if (size < 0)
        return NULL;

    if (data_size)
        *data_size = size;

    out = (long*) PyMem_Malloc(size * sizeof(long));
    if (!out) {
        Py_DECREF(seq);
        PyErr_NoMemory();
        return NULL;
    }

    for (i = 0; i < size; i++)
        out[i] = PyInt_AsLong(PySequence_Fast_GET_ITEM(seq, i));

    Py_DECREF(seq);

    if (PyErr_Occurred()) {
        PyMem_Free(out);
        out = NULL;
    }

    return out;

}


and I get this error..

C:\project\myapp.c(549) : error C2040: 'get_long_array' : 'long
*(struct _object *,int *)' differs in levels of indirection from 'int
()'

any idea?

Fredrik Lundh wrote:
> Jeremy Moles wrote:
>
> > Probably what you want to do though is just keep the tuple as is and
> > iterate over it using the PySequence_* protocol:
> >
> > http://docs.python.org/api/sequence.html
>
> I did post a complete and tested example a few days ago, which contained
> code that showed how to do this.  a complete waste of time, of course.
> 
> </F>