[python-win32] win32com calling C++ COM interface

[bob]

At 01:22 PM 10/19/2005, Shad Muegge wrote:
>Hi,
>
>I've just started looking at Python.  I am trying to resolve an issue a 
>user is having trying to access the COM interface in our application from 
>Python.
>
>C++ code:
>
>STDMETHODIMP
>CMyClass::Read(
>   const int   x,
>   VARIANT  *indexlist,          // IN:  "safe" array of  4-byte integers
>   VARIANT  *results)
>
>
>Python code:
>
>     def read(self, x, addr):
>         try:
>             addr = buffer(array.array('L', addr))
>             data = self.__Api.Read(x, addr)
>...
>
>x.read(0, 0x12345678)
>
>The variant that shows up on the C++ code is a safearray of 1-byte 
>integers with 4 elements: 12, 34, 56, 78.
>
>The API treats them each as individual "addresses"...
>
>Here's the COM definition from the .py file.
>
>  def Read(self, x=defaultNamedNotOptArg, indexlist=defaultNamedNotOptArg, 
> results=pythoncom.Missing):
>   """method Read"""
>   return self._ApplyTypes_(2, 1, (24, 0), ((3, 1), (16396, 1), (16396, 
> 2)), 'Read', None,x
>    , indexlist, results)
>
Since I don't know the C++ side of COM I probably can't help. And perhaps 
it is for that reason that I don't even know what the user's issue is. If 
it is obvious to the cognoscenti, fine. For my sake could you elaborate. 
What is the "issue"?