Try a look on this:
http://www.cplusplus.com/doc/tutorial/files.html
On 9/4/07, Shannon Allen <[EMAIL PROTECTED]> wrote:
>
> I am trying to get comfortable using the lostream class for large
> objects. I have a large binary file that I am storing in a BLOB that I
> can get back out using largeobjectaccess and then use the to_file(file)
> method to write it back out and that works fine. However, I want to
> give users streaming functionality, but I need to know how to do it
> first :-) .
>
> What I would like to do first is stream this back out to a file, similar
> to what I've already done with largeobjectaccess::to_file(file), but
> instead I want to use lostream.
>
> Given this code, what do I need to do next?
>
> ...
> pqxx::work w(*atr->getConn(),me);
> pqxx::ilostream s(w, id5);
>
> ofstream file("test.seqb", ios::out | ios::binary | ios::trunc);
> cout << "Streaming blob into a file " << endl;
>
> //This isn't right
> if(s.good())
> {
> file << s;
> }
> cout << "Done Streaming blob into a file " << endl;
> file.close();
> ...
> _______________________________________________
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>
--
Hilton William Ganzo Perantunes
Sistemas de Informação - Universidade Federal de Santa Catarina
--
Dinheiro não traz felicidade, mas dá uma sensação tão parecida... -_-
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