not able to read output from the terminal

[jack101]

this code was meant to compile a C file and read the errors encountered while compiling a file through gcc in ubuntu.
my problem is that variable result is always empty, even in case of error containing file, result should have "errors" (these are same errors which are displayed in terminal if file is compiled )

QProcess myProcess;
        QString program = "gcc";
        QStringList arguments;
        arguments << fileName;
        myProcess.start(program, arguments);
        myProcess.waitForFinished();
        QByteArray result = myProcess.readAllStandardOutput ();
        const QString a (result);
        if(!a.isEmpty())
        {
            QFont font1;
            font1.setFamily("Courier");
            font1.setFixedPitch(true);
            font1.setPointSize(10);
            font1.setBold(true);
 
            QTextEdit *errorWindow;
            errorWindow = new QTextEdit;
            errorWindow->setFont(font1);
            errorWindow->setText(a);
            errorWindow->show();
         }

QProcess myProcess;
        QString program = "gcc";
        QStringList arguments;
        arguments << fileName;
        myProcess.start(program, arguments);
        myProcess.waitForFinished();
        QByteArray result = myProcess.readAllStandardOutput ();
        const QString a (result);
        if(!a.isEmpty())
        {
            QFont font1;
            font1.setFamily("Courier");
            font1.setFixedPitch(true);
            font1.setPointSize(10);
            font1.setBold(true);

            QTextEdit *errorWindow;
            errorWindow = new QTextEdit;
            errorWindow->setFont(font1);
            errorWindow->setText(a);
            errorWindow->show();
         }

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[MrShahi]

I think you show use signal slot mechanism to read standard output of process.
like
connect(&myProcess,SIGNAL(readyReadStandardOutput( )),this,SLOT(readStandardData());
//readStandardData() is slot from where you can read data of your process.

I hope this will help you..

[jack101]

I think you show use signal slot mechanism to read standard output of process.
like
connect(&myProcess,SIGNAL(readyReadStandardOutput( )),this,SLOT(readStandardData());
//readStandardData() is slot from where you can read data of your process.

I hope this will help you..

no readStandardOutput() is a standard function of QProcess, i didn't used any signal slot mechanism for this part.

[wysota]

Are you sure errors go to STDOUT and not STDERR?