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

[Vincent Povirk (they/them)]

+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?