Qt5开发及实例-CH1002.rar,Qt5服务器端的编程udpserver代码

#include "udpserver.h" #include <QHostAddress> UdpServer::UdpServer(QWidget *parent,Qt::WindowFlags f) : QDialog(parent,f) { setWindowTitle(tr("UDP Server")); //设置窗体的标题 /* 初始化各个控件 */ TimerLabel = new QLabel(tr("计时器："),this); TextLineEdit = new QLineEdit(this); StartBtn = new QPushButton(tr("开始"),this); /* 设置布局 */ mainLayout = new QVBoxLayout(this); mainLayout->addWidget(TimerLabel); mainLayout->addWidget(TextLineEdit); mainLayout->addWidget(StartBtn); connect(StartBtn,SIGNAL(clicked()),this,SLOT(StartBtnClicked())); port = 5555; //设置UDP的端口号参数，服务器定时向此端口发送广播信息 isStarted = false; udpSocket = new QUdpSocket(this); timer = new QTimer(this); //创建一个QUdpSocket //定时发送广播信息 connect(timer,SIGNAL(timeout()),this,SLOT(timeout())); } void UdpServer::StartBtnClicked() { if(!isStarted) { StartBtn->setText(tr("停止")); timer->start(1000); isStarted =true; } else { StartBtn->setText(tr("开始")); isStarted = false; timer->stop(); } } void UdpServer::timeout() { QString msg = TextLineEdit->text(); int length=0; if(msg=="") { return; } if((length=udpSocket->writeDatagram(msg.toLatin1(), msg.length(),QHostAddress::Broadcast,port))!=msg.length()) { return; } } UdpServer::~UdpServer() { }