IStream

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3 total messages Started by Jonathan Benedicto Fri, 07 Jan 2005 05:11

#306

Author: Jonathan Benedicto
Date: Fri, 07 Jan 2005 05:11

25 lines
1469 bytes

How do I use TStreamAdapter with TStream to get a IStream ?

I've tried this :

                pFileStream = new TFileStream(m_pwszURL, fmOpenRead | 
fmShareDenyWrite);
                pStreamAdapter = new TStreamAdapter(pFileStream, 
soReference);

                ...

                hr = 
pReaderAdvanced2->OpenStream((IStream*)(pStreamAdapter), this, NULL);
                if(FAILED(hr)){
                        ShowMessage("Couldn't open file.");
                        break;
                }

But it gives me a access violation.

Thank you.

-- 
Jonathan

Re: IStream

#307

Author: Remy Lebeau (TeamB)
Date: Fri, 07 Jan 2005 07:54

16 lines
1440 bytes

"Jonathan Benedicto" <incorrect@no.server> wrote in message
news:41de1a07$1@newsgroups.borland.com...

>                 hr =
pReaderAdvanced2->OpenStream((IStream*)(pStreamAdapter), this, NULL);

That should be this instead:

    hr = pReaderAdvanced2->OpenStream(*pStreamAdapter, this, NULL);

TStreamAdapter has an IStream* conversion operator, but you have to
dereference the pointer to get to it.


Gambit

Re: IStream

#308

Author: Jonathan Benedicto
Date: Fri, 07 Jan 2005 15:27

25 lines
1656 bytes

Thank you very much. It fixed the problem completely.

-- 
Jonathan

"Remy Lebeau (TeamB)" <no.spam@no.spam.com> wrote in message 
news:41de40f5$1@newsgroups.borland.com...
>
> "Jonathan Benedicto" <incorrect@no.server> wrote in message
> news:41de1a07$1@newsgroups.borland.com...
>
>>                 hr =
> pReaderAdvanced2->OpenStream((IStream*)(pStreamAdapter), this, NULL);
>
> That should be this instead:
>
>    hr = pReaderAdvanced2->OpenStream(*pStreamAdapter, this, NULL);
>
> TStreamAdapter has an IStream* conversion operator, but you have to
> dereference the pointer to get to it.
>
>
> Gambit
>
>

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