Printing file content (text) on a text browser

[russjohn834]

Hi,

I've a basic question. I do the follwoing to display file content in a textBrowser:

 QString name = "log_file_"+pLabel+".txt";

    QFile file(name);

    file.open(QIODevice::ReadOnly|QIODevice::Text);

    QTextStream instream(& file);

    while (!instream.atEnd()){
            QString line = instream.readLine();

            qDebug()<<line; // I can see all the lines here 

            ui->textBrowser->setText(line+"\n"); // Here only the last line is printed 
        }


     file.close();

in the above snipet

ui->textBrowser->setText(line+"\n"); /

Only prints the last line of the text, whereas I need to print whole contents on the text on textBrowser. Can you spot a mistake here?

[artwaw]

@russjohn834 Hi,
please look more closely at your code.

ui->textBrowser->setText(line+"\n");

You call setText() with a single line only.
You could either use setSource() or read the whole content of the file and then setText().

I imagine using setSource() would eliminate the need for the QFile and related.

[VRonin]

@artwaw is correct.
An alternative is to use append instead of setText

[russjohn834]

@artwaw Thanks a lot for pointing it out. I replaced readLine() with readAll(), and it works!

[russjohn834]

@VRonin Thank you!, that also works :)