与QThread的通信不使用信号/插槽

我按照本教程了解 QThreads ：http://mayaposch.wordpress.com/2011/11/01/how-to-really-truly-use-qthreads-the-full-explanation/

我遇到的唯一问题是杀死 QThread . 我在工作对象的 process() 循环中有一个标志，我将其推入我的 QThread 实例，称为 m_ShouldSendFrames . 如果该标志被翻转为假，则我的处理循环中断并且工作者对象发出 finished() 信号 .

我遇到的问题是我似乎无法在 QThread 中获取我的worker对象以从主线程接收我的 stopSendingFrames() 信号 . 我连接（并且连接返回'true'），如下所示：

connect(this, SIGNAL(stopSendingFrames()), m_UdpWorkerBlended, SLOT(stopFrames()),Qt::QueuedConnection); // Stop broadcasting

在我的 killUdpThread 函数中，我想发出 stopSendingFrames() 信号并让 m_UdpWorker 对象得到它 . 但它永远不会！我可以让标志改变的唯一方法是在_1400020中执行此操作：

m_UdpWorkerBlended->stopFrames();

然而，这是不安全的并且随机崩溃，因为它没有从工作人员正在运行的 QThread 调用 .

我也尝试了 invokeMethod 方式 - 但它也不会触发插槽：

QMetaObject::invokeMethod(m_UdpWorkerBlended,"stopFrames",Qt::QueuedConnection);

有人可以帮我理解为什么我不能调用 invokeMethod 或使用信号来触发我在 QThread 中的工作对象中运行的插槽但我可以直接调用它（不安全）吗？谢谢！

启动线程功能：

int UdpThreadController::startUdpThread(int frameType, int port, QString ip) {

    #if SINGLETON_CAMERA_UDP_DEBUG
    qDebug() << "Starting Thread! Frame type is: " << frameType;
    #endif

    // Check for type of frame to emit
    if ( frameType == 0 ) {

        #if SINGLETON_CAMERA_UDP_DEBUG
        qDebug() << "Frames are vl";
        #endif

        // Delete any existing threads / workers
        killUdpThread(0);

        // New objects
        m_UdpThreadBlended = new QThread();
        m_UdpWorkerBlended = new UdpWorker();

        // Assign Port and IP and Frame Type
        m_UdpWorkerBlended->m_ShouldSendFrames = true;
        m_UdpWorkerBlended->m_Port = port;
        m_UdpWorkerBlended->m_AddressToUse = ip;
        m_UdpWorkerBlended->m_FrameType = frameType;

        // Push into thread
        m_UdpWorkerBlended->moveToThread(m_UdpThreadBlended);

        // Connect signals
        connect(this, SIGNAL(stopSendingFrames()), m_UdpWorkerBlended, SLOT(stopFrames()),Qt::QueuedConnection); // Stop broadcasting
        connect(m_UdpThreadBlended, SIGNAL(started()), m_UdpWorkerBlended, SLOT(process()));
        connect(m_UdpWorkerBlended, SIGNAL(finished()), m_UdpThreadBlended, SLOT(quit()));
        connect(m_UdpWorkerBlended, SIGNAL(finished()), m_UdpWorkerBlended, SLOT(deleteLater()));
        connect(m_UdpThreadBlended, SIGNAL(finished()), m_UdpThreadBlended, SLOT(deleteLater()));
        m_UdpThreadBlended->start();

        // All done
        return 0;

杀线程功能：

int UdpThreadController::killUdpThread(int frameType) {

    #if SINGLETON_CAMERA_UDP_DEBUG
    qDebug() << "Killing Thread! Frame type is: " << frameType;
    #endif

    // Check for type of frame to emit
    if ( frameType == 0 ) {

        // Delete any existing threads / workers
        if ( m_UdpWorkerBlended ) {

            #if SINGLETON_CAMERA_UDP_DEBUG
            qDebug() << "Emit signal to kill thread...";
            #endif

            // Stop broadcasting
            m_UdpWorkerBlended->stopFrames();

        }

        #if SINGLETON_CAMERA_UDP_DEBUG
        qDebug() << "Success ending UDP...";
        #endif

        // All done
        return 0;

    }