sample QThread

.cpp

class testThread
    : public QThread {
    Q_OBJECT

    public:
    bool isLock = true;

    void run() {
        while (1) {
            sleep(1);
            qDebug() << "in thread..." << "isLock:" << isLock;
            if (!isLock) break;
        }
        qDebug() << "thread is stop...";
    }
    public slots:
    void lock() {
        isLock = false;
    }
};