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++.

Regards,
Shin Guey

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