Re: [PATCH 2/2] windowscodecs: Add support for IMILBitmapScaler interface.

[Dmitry Timoshkov]

"Vincent Povirk (they/them)"  wrote:
> +static HRESULT WINAPI
> IMILBitmapScaler_QueryInterface(IMILBitmapScaler *iface, REFIID iid,
> - void **ppv)
>
> +{
> - BitmapScaler *This = impl_from_IMILBitmapScaler(iface);
> -
> - TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
> -
> - if (!ppv) return E_INVALIDARG;
> -
> - if (IsEqualIID(&IID_IUnknown, iid) ||
> -
>    IsEqualIID(&IID_IMILBitmapScaler, iid) ||
> -
>    IsEqualIID(&IID_IMILBitmapSource, iid))
> - {
> -
>    IUnknown_AddRef(&This->IMILBitmapScaler_iface);
>
> This violates COM rules by returning a different IUnknown pointer
> depending on the interface queried. Does native do that?

According to the test app that I have here that's how it behaves.