How to check if a program is running by its name with Qt (C++)

Question

How to check if a program is running, by its name, with Qt (C++).

Will QProcess::pid do the job? I don\'t know how to use it. Please suggest.

Answer 1

A quick and dirty way to do it would be to just check the output of tasklist, something like:

bool isRunning(const QString &process) {
  QProcess tasklist;
  tasklist.start(
        "tasklist",
        QStringList() << "/NH" 
                      << "/FO" << "CSV" 
                      << "/FI" << QString("IMAGENAME eq %1").arg(process));
  tasklist.waitForFinished();
  QString output = tasklist.readAllStandardOutput();
  return output.startsWith(QString("\"%1").arg(process));
}

Using EnumProcesses is probably a better way (i.e. more "pure"; certainly more performant), but this may be "good enough" as long as this isn't being called in a big loop or something. The same idea could also be ported to other platforms as well, although obviously the command tool and parsing logic would be different.