Question

我第二次问这个问题而且我没有找到一个我不太熟悉qt事件的解决方案。这是我的代码：

class My_worker :public QObject{};

我在该类中有一个函数，它将定期发送带有计时器的数据。

My_worker::process{

   Qtimer my_timer=new Qtimer();

   my_timer->setInterval(time_ms);

   connect(my_timer,SIGNAL(timeout()),this(sendData()))

}

所以使用函数sendData()我发送的数据已经过了my_timer。这是我完成工作的主题。我在QCoreapplication课程中创建了这些内容。这样：

 class My_Application: public QCoreApplication{};

在构造函数中，我像这样定义信号和威胁。

 My_Application::My_Application{

 //First I create an object of My_worker

 My_worker my_worker=new My_worker();

 //Then I create a thread and move my worker to thread

 QThread my_thread=new QThread();

 my_worker->moveToThread(my_thread); 

 // then I connect the signals.

 connect(my_thread,SIGNAL(started)),my_worker,SLOT(process())); //So starts processing

 connect(my_worker,SIGNAL(finished()),my_thread,SLOT(quit()));

 connect(my_thread,SIGNAL(finished()),my_thread,SLOT(deleteLater))));

 connect(my_worker,SIGNAL(finished()),my_worker,SLOT(deleteLater()));


}

最后我的dataSend（）函数是;

void dataSend(){

//do some work

// **if I emit my finished signal here I see that the destructor of my_worker is called**

}

但是我不想在这里发出信号，我想在我的My_Application完成时破坏my_work。

所以在My_Application析构函数中我尝试删除my_worker，因此析构函数是

  My_Application::~My_Application(){

  cout<<"the destructor called for app"<<endl;

  if(my_worker->thread())

     connect(my_worker,SIGNAL(destroyed()),my_thread,SLOT(quit()));

     my_worker->deleteLater(); // this does not work and does not call my_worker destc.


 }

Answer 1

也许这可能会解决您的问题：

class My_worker :public QObject, public QRunnable{
    Q_OBJECT
public:
    My_Worker() : loop(0) {}

    void run();

public slots:
    void sendData();
    void quit();

private:
    QEventLoop *loop;
};

My_Worker.cpp

void My_Worker::run(){
    QTimer timer;
    timer.setInterval(time_ms);
    connect(&timer, SIGNAL(timeout()), this, SLOT(sendData()));

    loop = new QEventLoop;
    loop->exec();

    delete loop;
}

void My_Worker::quit(){
    if (loop){
        loop->quit();
    }
}

My_Application.cpp

My_Application::My_Application(){

    My_worker *my_worker=new My_worker();
    connect(this, SIGNAL(aboutToQuit()), my_worker, SLOT(quit()));
    QThreadPool::globalInstance()->start(my_worker);

}

有关QThreadPool，QEventLoop和QRunnable课程的详细信息，请参阅文档。

删除器在qt中没有响应

1 个答案: