Re: [PATCH v2 0/7] MR4986: mshtml: MessageEvent improvements and misc.

[Jacek Caban (＠jacek)]

Jacek Caban (@jacek) commented about dlls/mshtml/htmlwindow.c:
> +        return NULL;
> +
> +    /* Native assumes it's VT_DISPATCH and doesn't check it */
> +    hres = IDispatch_QueryInterface(V_DISPATCH(&var), &IID_IHTMLWindow2, (void**)&source);
> +    IDispatch_Release(V_DISPATCH(&var));
> +    if(hres != S_OK)
> +        return NULL;
> +
> +    if(compat_mode < COMPAT_MODE_IE9) {
> +        IHTMLWindow2 *tmp;
> +        hres = IHTMLWindow2_get_self(source, &tmp);
> +        if(hres == S_OK) {
> +            IHTMLWindow2_Release(source);
> +            source = tmp;
> +        }
> +    }
> Why is it needed?

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https://gitlab.winehq.org/wine/wine/-/merge_requests/4986#note_59724