Solved: the interface expected 1-based safearrays, while comtypes
sends 0-based safearrays. The array bound can be set with:
sa = _midlSAFEARRAY(c_int)
arr=sa.create([item.ServerHandle])
arr.contents.rgsabound[0].lLbound = 1
-e
On Thu, May 19, 2011 at 12:15 AM, Erik Wilsher <erik.wils...@gmail.com> wrote:
> I'm trying to call a third party library with comtypes automation. It
> could seem that I have some problems to get the parameters passed into
> the method right. In the documentation the "Validate" method is
> described to recive an "array of strings" in the 'ItemIDs' argument.
> The gen-cached signature is shown below:
>
> COMMETHOD([dispid(1610743822), helpstring(u'Validates a set of
> item ids without adding them to the collection.')], HRESULT,
> 'Validate',
> ( ['in'], c_int, 'NumItems' ),
> ( ['in'], POINTER(_midlSAFEARRAY(BSTR)), 'ItemIDs' ),
> ( ['out'], POINTER(_midlSAFEARRAY(c_int)), 'Errors' ),
> ( ['in', 'optional'], VARIANT, 'RequestedDataTypes' ),
> ( ['in', 'optional'], VARIANT, 'AccessPaths' )),
>
>
> I have tried (and searched for) a large number of variants to build
> the 'ItemIDs' argument, including:
>
> grp.Validate(1, ['Test.tag']) #Naive - did not expect this to work
>
>
> arr = _midlSAFEARRAY(comtypes.BSTR)
> x=arr.from_param(('Test.tag',))
> grp.Validate(1, x) #nope
> grp.Validate(1, pointer(x)) #no - not this one either
>
>
> They all return:
> Traceback (most recent call last):
> File "<interactive input>", line 1, in <module>
> COMError: (-2147024809, 'The parameter is incorrect.', (None, None,
> None, 0, None))
>
>
> Are there any suggestions what I could do about this?
>
> I also have a similar problem in another method where I need to pass
> an array of integers, defined as:
>
> ( ['in'], POINTER(_midlSAFEARRAY(c_int)), 'ServerHandles' ),
>
> For this argument I've tried array.array('x', (...)) where x is
> 'i','l','I', and 'L', as well as other ways to build this parameter
> without any success. Suggestions would be most helpful.
>
------------------------------------------------------------------------------
What Every C/C++ and Fortran developer Should Know!
Read this article and learn how Intel has extended the reach of its
next-generation tools to help Windows* and Linux* C/C++ and Fortran
developers boost performance applications - including clusters.
http://p.sf.net/sfu/intel-dev2devmay
_______________________________________________
comtypes-users mailing list
comtypes-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/comtypes-users
