Convert PyIDispatch object to struct IDispatch*

[Huayang Xia]

I am trying to use ctypes to call dll functions. One of the functions
requires argument "struct IDispatch* ". I do have a PyIDispatch object
in python. How can I convert this "PyIDispatc h object" to "struct
IDispatch* "?

Thanks in advance.

[Gabriel Genellina]

Re: Convert PyIDispatch object to struct IDispatch*

En Thu, 10 Apr 2008 18:45:04 -0300, Huayang Xia <huayang.xia@gm ail.com>
escribió:

I am trying to use ctypes to call dll functions. One of the functions
requires argument "struct IDispatch* ". I do have a PyIDispatch object
in python. How can I convert this "PyIDispatc h object" to "struct
IDispatch* "?

I think a PyIDispatch object is an IDispatch* itself.
But you'll get better answers from the python-win32 list:

http://mail.python.org/mailman/listinfo/python-win32

--
Gabriel Genellina

[Huayang Xia]

Re: Convert PyIDispatch object to struct IDispatch*

On Apr 11, 12:15 am, "Gabriel Genellina" <gagsl-...@yahoo.com.a r>
wrote:

En Thu, 10 Apr 2008 18:45:04 -0300, Huayang Xia <huayang....@gm ail.com>
escribió:
>

I am trying to use ctypes to call dll functions. One of the functions
requires argument "struct IDispatch* ". I do have a PyIDispatch object
in python. How can I convert this "PyIDispatc h object" to "struct
IDispatch* "?

>
I think a PyIDispatch object is an IDispatch* itself.
But you'll get better answers from the python-win32 list:http://mail.python.org/mailman/listinfo/python-win32
>
--
Gabriel Genellina

Thanks for the info.

To call a dll function, it needs a C style IDispatch*. PyIDispatch is
a python wrapped one. I found a reference from:

http://svn.python.org/projects/ctypes/trunk/comtypes/comtypes/test/test_win32com_interop.py

which shows how to convert C style to python style. Unfortunately i
need the reversed version.

I will post the question to python-win32.

[Tim Golden]

Re: Convert PyIDispatch object to struct IDispatch*

Huayang Xia wrote:

On Apr 11, 12:15 am, "Gabriel Genellina" <gagsl-...@yahoo.com.a r>
wrote:

>En Thu, 10 Apr 2008 18:45:04 -0300, Huayang Xia <huayang....@gm ail.com>
>escribió:
>>

>>I am trying to use ctypes to call dll functions. One of the functions
>>requires argument "struct IDispatch* ". I do have a PyIDispatch object
>>in python. How can I convert this "PyIDispatc h object" to "struct
>>IDispatch* "?

>I think a PyIDispatch object is an IDispatch* itself.
>But you'll get better answers from the python-win32 list:http://mail.python.org/mailman/listinfo/python-win32
>>
>--
>Gabriel Genellina

>
Thanks for the info.
>
To call a dll function, it needs a C style IDispatch*. PyIDispatch is
a python wrapped one. I found a reference from:
>

http://svn.python.org/projects/ctypes/trunk/comtypes/comtypes/test/test_win32com_interop.py

>
which shows how to convert C style to python style. Unfortunately i
need the reversed version.
>
I will post the question to python-win32.

I've had a quick look at the PyIDispatch source and I can't see any obvious
way in which the underlying IDispatch is exposed. May have missed something,
but it's possible that there's not way out.

TJG