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List:       ms-atl
Subject:    Re: CoGetClassObjectFromURL
From:       Ryan Reid <ryanr () MOSSMICRO ! COM>
Date:       1997-07-30 18:46:37
[Download RAW message or body]


Well, whatever the documentation says, it's right.  I now have
everything working.  The ICodeInstall::OnCodeInstallProblem() method is
called, noteably, whenever the .OCX exists on the target.

FYI, I must say, this was a bit more complex than I had initially
expected (based on the documentation about code download).  I ended up
(re) implementing this in MFC, encapsulating the whole thing in a dialog
box with a meter, status, ... (you know).  Nothing against ATL, I have a
client, you know.

On another note, there is a method on IBindCtx (SetBindOptions) that
takes a pointer to a BIND_OPTS2 struct, which has a member grfFlags
which can have the value BIND_MAYBOTHERUSER (whew!).  I mention this
only because it seems (I use this loosely) that a code download should
set this flag.  (It is not set, according to the documentation).  Any
ideas?

Thanks for the help, again.
Ryan

>-----Original Message-----
>From:  Arlene Kagi [SMTP:ArleneK@ARKSPACE.COM]
>Sent:  Tuesday, July 29, 1997 2:33 PM
>To:    ATL@LISTSERV.MSN.COM
>Subject:       Re: CoGetClassObjectFromURL
>
>Good question.  I can only quote from documentation:
>
>"The ICodeInstall interface provides additional information in order to
>complete the negotiation for a component download operation. Such
>services are requested using IBindStatusCallback::QueryInterface. "
>
>" ICodeInstall interface is a callback interface used by system
>components to communicate with clients. Specifically, the Internet
>Component Download service (CoGetClassObjectFromURL) calls the methods
>of ICodeInstall to display a user interface (UI) message for
>verification of downloaded code. Methods of this interface are also
>used
>to provide an opportunity to resolve a problem, either by displaying a
>UI message or ending the code installation process. "
>
>>----------
>>From:  Ryan Reid[SMTP:ryanr@MOSSMICRO.COM]
>>Sent:  Tuesday, July 29, 1997 12:16 PM
>>To:    ATL@LISTSERV.MSN.COM
>>Subject:       Re: CoGetClassObjectFromURL
>>
>>What does the ICodeInstall have to do with it?  Does this apply only to
>>.cab files?
>>
>>Ryan
>>
>>>-----Original Message-----
>>>From:  Arlene Kagi [SMTP:ArleneK@ARKSPACE.COM]
>>>Sent:  Tuesday, July 29, 1997 11:41 AM
>>>To:    ATL@LISTSERV.MSN.COM
>>>Subject:       Re: CoGetClassObjectFromURL
>>>
>>>I had to write my own IBindStatusCallback template with an added
>>>ICodeInstall interface.  Now I'm able to use CoGetClassObjectFromURL
>>>with IE3.xx.
>>>
>>>Arlene
>>>
>>>>----------
>>>>From:  Arlene Kagi
>>>>Sent:  Monday, July 28, 1997 12:37 PM
>>>>To:    ATL@LISTSERV.MSN.COM
>>>>Subject:       QE: CoGetClassObjectFromURL
>>>>
>>>>WIN95
>>>>VC5.0
>>>>
>>>>I'm trying to use CoGetClassObjectFromURL to download a cab file.  The
>>>>asynchronous download starts out fine (no errors), but when the callback
>>>>"OnStopBinding" is called, the HRESULT has the value
>>>>TRUST_E_SUBJECT_NOT_TRUSTED and the cab never gets downloaded.
>>>>
>>>>I've signed the cab file with authenticode2.
>>>>
>>>>Does anyone have any clues?
>>>>
>>>>Thanks,
>>>>Arlene
>>>>
>>
>
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