read QProcess output to string

Question

I have a code that uses QProcess like this.

int main(int argc, char *argv[])
{
    int status=0;
    QProcess pingProcess;
    QString ba;
    QString exec =         


        

Answer 1

You shouldn't use QProcess::execute method, it's static and doesn't alter your pingProcess variable. You have no access to a process started using this method. You need to use start() method instead. Note that this method is asynchronous. You need to use waitForFinished and then read the data.

pingProcess.start(exec, params);
pingProcess.waitForFinished();
QByteArray output = pingProcess.readAllStandardOutput();