[Swig-user] SWIG_ConvertPtr failing - how do I diagnose the problem?

[Eric Y. <er...@er...>]

Hi Everyone,

I wrapped my C++ code using swig for python.
Normally, the code with a COM, and I can pass COM objects to functions.

Now, what I've done is wrapped my C++ code with SWIG, and used the comtypes
package in Python to create my COM objects.

When I try to pass my Python-COM objects to SWIG I get errors,specifically,
at lines that are trying to convert my Python COM objects, (or any Python
Objects).

e.g.
SWIG_ConvertPtr(argv[1], 0, SWIGTYPE_p_ChannelPtr, 0)

This returns -1

My question is what should I do to fix the problem?

One of the potential causes, is that my SWIG code has no idea as to what a
ChannelPtr is.
And it doesn't include the actual code for the COM.


  Eric