On Nov 10, 2019, at 4:13 PM, Peng Chen <capan...@gmail.com> wrote: > > then I tried > riid = "" > ctx = None > properties = propsys.SHGetPropertyStoreFromParsingName( > file_name, ctx, shellcon.GPS_READWRITE, riid) > it reported: > (-2147221005, 'Invalid Class String', None, None)
That’s correct. “” is not a valid class string. SHGetPropertyStoreFromParsingName returns a COM interface, and you have to tell it what interface you want. It is usually IPropertyStore. What are you trying to do here? Are you porting some C++ code you found into Python? — Tim Roberts, t...@probo.com Providenza & Boekelheide, Inc.
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