Re: [PATCH 3/8] setupapi: Implement SetupDiOpenDeviceInfoW().

[Zhiyi Zhang]

On 3/15/19 12:37 AM, Zebediah Figura wrote:
> On 3/14/19 11:32 AM, Zhiyi Zhang wrote:
> > +    /* Check class GUID */
> > +    size = sizeof(classW);
> > +    if (RegQueryValueExW(instanceKey, ClassGUID, NULL, NULL, (BYTE *)classW, &size))
> > +        goto done;
> > -
> >
> > +    classW[37] = 0;
> > +    UuidFromStringW(&classW[1], &guid);
> > -
> >
> > +    if (!IsEqualGUID(&guid, &set->ClassGuid))
> > +    {
> > +        error = ERROR_CLASS_MISMATCH;
> > +        goto done;
> > +    }
>
> What if set->ClassGuid is GUID_NULL? I suspect this should match SetupDiCreateDeviceInfo().

Thanks. I've sent in a new version handling GUID_NULL.