[python-win32] hoto cast pyobject to ccompnt

[Matteo Boscolo]

Il 28/11/2015 08:30, Tim Roberts ha scritto:
> On Nov 26, 2015, at 11:34 PM, Matteo Boscolo <matteo.boscolo at boscolini.eu> wrote:
>> in my cpp code I have my function that recive a com objetc from python
>> into args
>> from here I'm not able to cast such an object into a ccompnt
>>
>> static PyObject *
>> connect(PyObject * self, PyObject * args)
>> {
>>          PyObject * pyApplication;
>>          CComPtr<IUnknown> pUnk;
>>          //try to get active object
>>          if (!PyArg_ParseTuple(args, "O", &pyApplication))
>>              return NULL;
>>          pUnk=(CComPtr<IUnknown> )pyApplication; //<<---- not able to cast
> You are just getting a compile-time error, right?  That’s because the smart pointer wrapper (CComPtr)will only accept a pointer that actually derives from the type it is wrapping.  In this case, that’s not so.  You will probably have to force the pointer to be an IUnknown* before you can wrap it in a smart pointer.
>
>      pUnk = (IUnknown*)pyApplication;
>
> —
> Tim Roberts, timr at probo.com
> Providenza & Boekelheide, Inc.
>
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sorry i did a mistake your cast seems to be ok for compyling ..



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