Wong, Shin Guey schrieb:
> I had a com dll return a structure and the structure definition is like below:
>
> class DeviceInfo(Structure):
> _recordinfo_ = ('{70577167-ED71-4977-B719-2C40C6DD8E1D}', 1, 2, 0L,
> '{6C7A25CB-7938-4BE0-A285-12C616717FDD}')
> DeviceInfo._fields_ = [
> ('Special', VARIANT),
> ('Name', BSTR),
> ('Value', c_int),
> ('Flags', c_ulong),
> ('Type', c_ulong),
> ('ID', c_ulong),
> ('LocId', c_ulong),
> ('SerialNumber', BSTR),
> ('Description', BSTR),
> ('ftHandle', c_ulong),
> ]
>
>
> I can access the Value, Flags, ID, Type. But the SerialNumber, Name
> and Description all return None. Is the comtypes.BSTR working? I am
> sure my com dll is working because it can works under vb, c# and c++.>
I think it *should* work. Are you sure the fields contain non-empty strings?
'None' is expected to be returned for empty (NULL-pointer) BSTR fields.
Anyway; is this com dll available publicely, so that I can test it myself?
--
Thanks,
Thomas
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