希望在主线程中创建多个子线程，在各个子线程中进行串口数据收发及解析，发现在子线程中创建串口对象，总是不响应串口消息，readData()中打断点怎么都进不去，跪求大侠指点！ 代码如下： 主线程中创建子线程： <pre class='brush: cpp'>QMyThread *MyThread = new QMyThread; MyThread->start();</pre> 子线程中创建串口对象： <pre class='brush: cpp'>void QMyThread::run() { m_MyConn = new MyConnect(this,&(pRtuObj->m_strCommType),&(pRtuObj->m_sListSerialPara),&(pRtuObj->m_sListNetPara)); m_MyConn->openCommu(); m_MyConn->moveToThread(this); } 打开串口： //通信连接 void MyConnect::openCommu() { if(m_Serial != NULL) { delete m_Serial; m_Serial = NULL; } m_Serial = new QSerialPort; connect(m_Serial, SIGNAL(readyRead()), this, SLOT(readData())); m_Serial->setPortName(m_CommSettings.name); m_Serial->setBaudRate(m_CommSettings.baudRate); m_Serial->setDataBits(m_CommSettings.dataBits); m_Serial->setParity(m_CommSettings.parity); m_Serial->setStopBits(m_CommSettings.stopBits); if (m_Serial>open(QIODevice::ReadWrite)) { SendEvent(tr("Connected to %1").arg(m_CommSettings.m_sListSerialPara.join(","))); m_chCommuStatus = 1; } else { SendEvent(tr("Open Serial Error, %1").arg(m_CommSettings.m_sListSerialPara.join(","))); m_chCommuStatus = 0; } } 串口读数据: //串口读数据 void MyConnect::readData() { QByteArray buffer = m_Serial->readAll(); displayRxTxData(buffer); }</pre>