Qt-interest Archive, March 2002
Read line of file to QString
Message 1 in thread
I want to read the data from a text file line by line. Each line of text will
be stored in a QString. I will then store the list of strings in a
QStringList.
How should I go about reading the file line by line and storing the text in a
string?
Thanks, Mark
Message 2 in thread
Something like this:
QFile myFile("testFile"); // Create a file handle for the file named
"testFile"
QString line;
if (!myFile.open(IO_ReadOnly)) // Open the file
{
// handle error
}
QTextStream stream( &myFile ); // Set the stream to read from myFile
line = stream.readLine(); // this reads a line (QString) from the file
Hope this helps.
You should check the doc for QTextStream and QFile, more there.
Erlend
> -----Original Message-----
> From: owner-qt-interest@trolltech.com
> [mailto:owner-qt-interest@trolltech.com]On Behalf Of Mark Finlay
> Sent: Wednesday, March 13, 2002 12:57
> To: qt-interest@trolltech.com
> Subject: Read line of file to QString
>
>
> I want to read the data from a text file line by line. Each line
> of text will
> be stored in a QString. I will then store the list of strings in a
> QStringList.
>
> How should I go about reading the file line by line and storing
> the text in a
> string?
>
> Thanks, Mark
>
> --
> List archive and information: http://qt-interest.trolltech.com
>
>
Message 3 in thread
Mark,
Try something like this...
QFile file("MyFile.ext");
QString line;
if ( file.open(IO_ReadOnly | IO_Translate) ) {
// file opened successfully
QTextStream t( &file ); // use a text stream
// until end of file...
while ( !t.eof() ) {
// read and parse the command line
line = t.readLine(); // line of text excluding '\n'
// do something with the line
...
}
// Close the file
file.close();
}
Mark McLaren
Mark Finlay wrote:
>
> I want to read the data from a text file line by line. Each line of text will
> be stored in a QString. I will then store the list of strings in a
> QStringList.
>
> How should I go about reading the file line by line and storing the text in a
> string?
>
> Thanks, Mark
>
> --
> List archive and information: http://qt-interest.trolltech.com
Message 4 in thread
> How should I go about reading the file line by line and
> storing the text in a
> string?
Open the file with QFile.
Create a QTextStream object with QFile object as the IODevice
and use QTextStream::readLine()
--
[ signature omitted ]
