请教关于QThread中有其他继承类的情况 - Asking about if there's other heritage class in QThread usage

[YANG-Mingcong]

抱歉打扰了，拜读您的关于“[TOC] #Qt使用多线程的一些心得——1.继承QThread的多线程使用方法”一文后，在自己的代码中测试关于QThread 与 QObject两种实现方式。 Sorry for bothering, I'm testing 2 different ways (QThread, and QObject) in my own code.

在测试QThread继承类实现多线程时，总是出现如下报错。 When testing the QThread inheritance class to achieve multithreading, always get the error below.

QObject: Cannot create children for a parent that is in a different thread. (Parent is ArtNetRxThread(0x7f894dd6ec10), parent's thread is QThread(0x7f894dd090d0), current thread is ArtNetRxThread(0x7f894dd6ec10)

我猜测是由于我的类中有这种构架的继承类导致的。 I guess it is due to the inheritance of this kind of things in my class.

.h file

private:
   ....
    QUdpSocket *udpSocket = nullptr;

.cpp file

void ArtNetRxThread::run()
{
 ....
        udpSocket = new QUdpSocket(this);
        udpSocket->bind(1936, QUdpSocket::ShareAddress);

        connect(udpSocket, &QUdpSocket::readyRead,
                this, &ArtNetRxThread::processPendingDatagrams);
....
}

我想知道，这种情况还有可能使用由QThread继承类来实现吗？还是只能使用QObject的方式呢？ I wish to know, is this possible to use QThread inherited class to achieve? Or can I only use QObject method?

非常感谢！ Thanks a lot!

[czyt1988]

可以使用QThread继承，只不过你不要在new时传入this指针，qthread很特别，它的run函数和qthread自身不在一个线程里的，你应该改为

udpSocket = new QUdpSocket();
udpSocket->bind(1936, QUdpSocket::ShareAddress);

    connect(udpSocket, &QUdpSocket::readyRead,
            this, &ArtNetRxThread::processPendingDatagrams);

然后在线程的析构中把资源释放：

ArtNetRxThread::~ArtNetRxThread（）
{
     if(udpSocket)
           delete udpSocket ;
}

[YANG-Mingcong]

非常感谢您的指教！向您学习！ Thanks a lot~