[python-win32] How to set value with PyIPropertyStore

[Tim Roberts]

On Nov 10, 2019, at 4:13 PM, Peng Chen <capaneus at 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, timr at probo.com
Providenza & Boekelheide, Inc.

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