QT UDP网络编程实现简单消息传输
作者:直到流萤成飞火
这篇文章主要为大家详细介绍了QT UDP网络编程实现简单消息传输,文中示例代码介绍的非常详细,具有一定的参考价值,感兴趣的小伙伴们可以参考一下
本文实例为大家分享了QT UDP实现简单消息传输的具体代码,供大家参考,具体内容如下
这几天看了下Qt的udp,顺便实现了下简单的消息传输,看起来比较简单。
UDP服务器:
截图如下:
代码:
server.h
#ifndef WIDGET_H #define WIDGET_H #include <QWidget> #include<QUdpSocket> #include<QtNetwork> #include<QLabel> #include<QPushButton> #include<QLineEdit> #include<QGridLayout> #include<QTimer> class Widget : public QWidget { Q_OBJECT public: Widget(QWidget *parent = 0); ~Widget(); protected: QTimer* timer; QImage* image; private slots: void send(); void bordcaststart(); private: QPushButton* start_ptn; QPushButton* close_ptn; QPushButton* send_ptn; QLabel* label; QLineEdit* edit; QLabel* image_label; QGridLayout* layout; QUdpSocket* udpsocket; }; #endif // WIDGET_H
server.cpp
#include "widget.h" Widget::Widget(QWidget *parent) : QWidget(parent) { start_ptn=new QPushButton("start"); close_ptn=new QPushButton("quit"); send_ptn=new QPushButton("send"); label=new QLabel; label->setText("this is test!"); edit=new QLineEdit; layout=new QGridLayout(this); layout->addWidget(label); layout->addWidget(edit); layout->addWidget(send_ptn,1,1); layout->addWidget(start_ptn,2,0); layout->addWidget(close_ptn,2,1); this->resize(400,400); timer=new QTimer(this); udpsocket=new QUdpSocket(this); connect(start_ptn,SIGNAL(clicked(bool)),this,SLOT(bordcaststart())); connect(close_ptn,SIGNAL(clicked(bool)),this,SLOT(close())); // connect(timer,SIGNAL(timeout()),this,SLOT(send())); } Widget::~Widget() { } void Widget::send() { QByteArray datagram= "Broadcast message " +edit->text().toUtf8(); udpsocket->writeDatagram(datagram.data(),datagram.size(),QHostAddress::Broadcast,45454); } void Widget::bordcaststart() { // timer->start(1000); start_ptn->setDisabled(true); connect(send_ptn,SIGNAL(clicked(bool)),this,SLOT(send())); }
客户端
截图:
client.h
#ifndef WIDGET_H #define WIDGET_H #include <QWidget> #include<QUdpSocket> #include<QtNetwork> #include<QLabel> #include<QTimer> #include<QPushButton> #include<QGridLayout> class Widget : public QWidget { Q_OBJECT public: Widget(QWidget *parent = 0); ~Widget(); protected: private: QGridLayout* layout; QPushButton* quit_ptn; QLabel* label; QUdpSocket* udpsocket; private slots: void boarcast(); }; #endif // WIDGET_H
client.cpp
#include "widget.h" Widget::Widget(QWidget *parent) : QWidget(parent) { label=new QLabel; quit_ptn=new QPushButton("quit"); layout=new QGridLayout(this); layout->addWidget(label); layout->addWidget(quit_ptn); this->resize(200,200); udpsocket=new QUdpSocket(this); udpsocket->bind(45454, QUdpSocket::ShareAddress); connect(udpsocket,SIGNAL(readyRead()),this,SLOT(boarcast())); connect(quit_ptn,SIGNAL(clicked(bool)),this,SLOT(close())); } Widget::~Widget() { } void Widget::boarcast() { while (udpsocket->hasPendingDatagrams()) { QByteArray datagram; datagram.resize(udpsocket->pendingDatagramSize()); QHostAddress sender; quint16 senderPort; udpsocket->readDatagram(datagram.data(), datagram.size(), &sender, &senderPort); label->setText(datagram); } }
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。