文档介绍：,工程名为“udpone”,work模块,Baseclass选择QMainWindow。(说明:如果一些QtCreator版本没有添加模块一项,:QT+=network)(TextEdit),左边的那个的objectName改为为textSend,右边的那个的objectName改为textReceive,添加一个按钮,改其objectName为send,如下所示:#include<work>,添加public变量   QHostAddress*hostaddr1;和QHostAddress*hostaddr2;添加private变量 QUdpSocket*udpSocket1;和QUdpSocket*udpSocket2;添加私有槽函数:privateslots:      voidsend();      voidreceive();,加入如下代码:(1)在构造函数中添加:udpSocket1=newQUdpSocket(this);   udpSocket2=newQUdpSocket(this);   hostaddr1=newQHostAddress("");   hostaddr2=newQHostAddress("");   boolconn=udpSocket1->bind(*hostaddr1,6666,QUdpSocket::ShareAddress);//监听本机上的6666端口,如果有消息到来,就会发送readyRead()信号。   if(!conn){        QMessageBoxbox;        (tr("连接错误"));        ();    }else{        connect(udpSocket1,SIGNAL(readyRead()),this,SLOT(receive()));        connect(ui->send,SIGNAL(clicked()),this,SLOT(send()));    }(2)实现send函数:voidMainWindow::send(){   QMessageBoxbox;   QStringtext=ui->textSend->toPlainText();   if(()==0){       (tr("请输入发送内容"));       ();   }  udpSocket2->writeDatagram((),(),*hostaddr2,6665);// }(3)实现receive函数:voidMainWindow::receive(){       while(udpSocket1->hasPendingDatagrams()){