[Qt-interest] Writing file.

[Yves Bailly]

Hello,

Sujan Dasmahapatra wrote:
> Dear Friends I am writing some data in file which doesn’t exist.So I 
> think it should be created and then being written but it’s not writing 
> the data onto the file.Can u please anyone check whats wrong with this 
> piece of code !!!
> 
> QFile filewrite(“profile_n.grd”);
> filewrite.open(QIODevice::WriteOnly);

Better check if the open succeded:
if ( filewrite.open(QIODevice::WriteOnly)
{
   // writing
}
else
{
   // error management,
   // see QFile::error()
}

> QTextStream out(&filewrite);
> out << noOfPoints << “\n”;

Maybe, close the file. The whole code would be:

QFile filewrite(“profile_n.grd”);
if ( filewrite.open(QIODevice::WriteOnly)
{
   QTextStream out(&filewrite);
   out << noOfPoints << “\n”;
   out.flush(); // probably not necessary...
   filewrite.close();
}
else
{
   // error management,
   // see QFile::error()
}

If that doesn't work, check if you have write permission on
the directory where the file is to be created.

Hope this helps.

-- 
     /- Yves Bailly - Software developper  -\
     \- Sescoi France http://www.sescoi.fr -/
"The possible is done. The impossible is being done. For miracles,
thanks to allow a little delay."