MFC also has CComPtrBase which uses & to represent pointer lifetimes to COM objects such as while(pEnum->Next(1, &pFilter, &cFetched) == S_OK). Especially fun when debugging DirectShow filtergraphs someone made in the UI completely. There is more of an explanation here: https://devblogs.microsoft.com/oldnewthing/20221010-00/?p=10...
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