msxml3: Ignore IActiveScript interface for IXMLHTTPRequest

Nikolay Sivov bunglehead at
Fri Feb 11 07:00:52 CST 2011

On 2/11/2011 15:56, Jacek Caban wrote:
> On 2/11/11 12:02 PM, Nikolay Sivov wrote:
>> On 2/11/2011 13:30, Alistair Leslie-Hughes wrote:
>>> Hi,
>>> --------------------------------------------------
>>> From: "Nikolay Sivov" <bunglehead at>
>>> Sent: Friday, February 11, 2011 9:27 PM
>>> To: "Alistair Leslie-Hughes" <leslie_alistair at>
>>> Cc: <wine-devel at>
>>> Subject: Re: msxml3: Ignore IActiveScript interface for IXMLHTTPRequest
>>>> On 2/11/2011 12:25, Alistair Leslie-Hughes wrote:
>>>>> Hi,
>>>>> On 11/02/2011 8:12 PM, Nikolay Sivov wrote:
>>>>>> On 2/11/2011 10:51, Alistair Leslie-Hughes wrote:
>>>>>>> Hi,
>>>>>>> Changelog:
>>>>>>> msxml3: Ignore IActiveScript interface for IXMLHTTPRequest
>>>>>> What's a purpose of this?
>>>>> To remove the FIXME from appearing in the logs.
>>>> What application is that? Does it appear running in browser 
>>>> scripting by any chance?
>>> Yes, it was a website that uses XMLHTTPRequest to load files off the 
>>> local
>>> filesystem.
>> My point is that browser scripting engine shouldn't query for that 
>> interface in a first place probably, so it's interesting to figure 
>> out why it's queried instead of silence it. Is it possible to 
>> reproduce that with wine-gecko or I need IE?
>> P.S. cc-ing Jacek, as he knows probably why such dead queries happen.
> It's queried by mshtml security manager and the query is right. It's 
> just the way to check if created object (usually via ActiveXObject 
> call in jscript) is a script engine. Once script engine owns an 
> objects, it queries for a few more ifaces for which returning 
> E_NOINTERFACE is perfectly valid and expected behavior. I think the 
> right fix in this case is silencing the FIXME (downgrading to WARN or 
> TRACE). FIXME in QueryInterface implementation is a good thing for 
> objects that implement a lot different ifaces and it's likely that 
> lack of some will cause app failure or objects that are unlikely to be 
> queried for unimplemented ifaces. I think it's not the case here.
Ok, thanks for explanation. So it's fine to silence it in this case or 
> Cheers,
>     Jacek

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