使用 QProcess 执行 CMD 命令并将其保存在 QString 中

Question

I wanted to execute the cmd command "wmic share get name" with QProcess and then save the result of the command in the QString variable. In further, I wanted to show it in QMessageBox or... How can I do that?

Answer 1

You can use QProcess for this. Let's say I want to execute g++ . Example:

    QProcess p;
    p.setProgram("g++");
    p.setArguments({"-O3", "filename.cpp"});
    p.start();

    // wait for the process to finish executing
    // returns true on success
    if (!p.waitForFinished()) {
       qDebug() << "Failed to execute!!";
       const QString error = p.readAllStandardError();
       if (!error.isEmpty()) {
        qDebug () << "Exit status: " << p.exitStatus() << ", Error: " << error;   
       }
        return;
    }

    // read output
    const QString output = p.readAllStandardOutput();
    qDebug () << output;

    // read error
    const QString error = p.readAllStandardError();
    if (!error.isEmpty()) {
        qDebug () << error;   
    }

    //do whatever you want with output