使用 QProcess 执行 CMD 命令以将 output 作为 QString 的正确方法是什么？

Question

I'm new using QT, I need to execute a CMD command on windows and get the output of this command as a string to later process and get specific data. The following code works well (it seems to work well). The only problem is that I get the following warning: "start is deprecated" , I think this warning message is because the start method needs an arguments list as parameter.

QString command = "tasklist /FI \"IMAGENAME eq notepad.exe\"";
QProcess *executeCommand = new QProcess();
executeCommand->start(command);
executeCommand->waitForFinished(-1);
QString output = executeCommand->readAllStandardOutput();
executeCommand->terminate();
qDebug() << commandOutput;

how can I remove this warning message?

Also I found in the web that I can use system() to execute a CMD command, but I'm not able to catch the output as string.

Another question: which of the above options is better to achieve what I'm trying to do, the QProcess or System (if is possible to get the output as QString)?

Thanks in advance!

Answer 1

There is an answer read QProcess output to string recommending static method QProcess::readAllStandardOutput() returning QByteArray . Then just instantiate QString from QByteArray implicitly.

If you are working on Qt application, it is better to stay inside Qt API to keep the code more or less portable.