loading a textfile in a qlabel

[harakiri]

hi,

can anyone tell me why the following code doesn't display the content of the given textfile in the QLabel ?

QFile trainResult("26.train");
QTextStream in(&trainResult);
 
trainLabel->setText(in.readAll());
trainLabel->adjustSize();

QFile trainResult("26.train");
QTextStream in(&trainResult);

trainLabel->setText(in.readAll());
trainLabel->adjustSize();

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26.train is a small textfile, trainLabel a simple QLabel. trainLabel->setText("abc"); works fine...

thanks in advance

[high_flyer]

you didn't open the file.
Also, the 'Qt' tags are not for code, but for reference to the docs.
Use the code tags '#' for code.

[harakiri]

you didn't open the file.

and how do i open it in this case?

[jpn]

and how do i open it in this case?

See the examples in QFile and QTextStream docs.

[harakiri]

See the examples in QFile and QTextStream docs.

isn't there anyone who can help me instead of posting links to the docu i've already read?

i tried to put the file into aQString but that didn't work either:

QString x = trainResult.readAll();

QString x = trainResult.readAll();

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[jpn]

isn't there anyone who can help me instead of posting links to the docu i've already read?

Did you try following the links? They take you directly to the corresponding examples. Here's one of them:

QFile file("in.txt");
if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) // <-- you are missing this
    return;
 
QTextStream in(&file);
while (!in.atEnd()) {
    QString line = in.readLine();
    process_line(line);
}

QFile file("in.txt");
if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) // <-- you are missing this
    return;

QTextStream in(&file);
while (!in.atEnd()) {
    QString line = in.readLine();
    process_line(line);
}

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