windows下基于QT的聊天室（协议tcp）

#include "chat.h" #include "ui_chat.h" #include <QMessageBox> int port_test=1; chat::chat(QWidget *parent) : QDialog(parent), ui(new Ui::chat) { ui->setupUi(this);//设置 UI设计的界面的控件 m_p_server = NULL; m_p_serverSocket = NULL; m_p_clientSocket = NULL; p_my_dlg = new MainDlg;//主界面 p_my_dlg->show(); //显示主界面 /* *连接信号 */ //主窗体中显示本窗体信号 connect(p_my_dlg, SIGNAL(showChatWindow()), this, SLOT(showAndHideSlot())); connect(p_my_dlg, SIGNAL(sendEnterMessage(QString , QString)), this,SLOT(enterSlot(QString , QString ))); connect(ui->writeMessageEdit, SIGNAL(textChanged()), this, SLOT(changeButtonStateSlot())); connect(ui->aboutButton, SIGNAL(clicked()), this, SLOT(createAboutSlot())); connect(ui->sendButton, SIGNAL(clicked()), this, SLOT(appendMessageSlot())); } chat::~chat() { delete ui; } //本窗体创建时由系统自动调用 void chat::changeEvent(QEvent *e) { QDialog::changeEvent(e); switch (e->type()) { case QEvent::LanguageChange: ui->retranslateUi(this);//设置本窗体的一些属性 break; default: break; } } //显示关闭主窗体，显示本窗体 void chat::showAndHideSlot() { delete p_my_dlg; this->show(); } //显示关于信息 void chat::createAboutSlot() { QMessageBox mess; mess.setFont(QFont("Sans Serif", 12, 50)); mess.warning(this, QString::fromLocal8Bit("About"), QString::fromLocal8Bit("<font size=5>An easy C/S Chatroom based on QT</font>")); } //根据选择p_my_dlg->m_bool_server 选择相应操作 void chat::enterSlot(QString name, QString host) { port = 22222;//设置Socket端口号 m_bool_server = p_my_dlg->m_bool_server;//选择状态传送 if (m_bool_server) { socketServer(); } else { socketClient(host); } ui->sendButton->setDisabled(false);//发送按钮不能使用 m_str_userName = name; ui->onlineMessageList->addItem(name); } //如果输入框为空，则发送按钮不能使用 void chat::changeButtonStateSlot() { bool boo_dis = ui->writeMessageEdit->toPlainText().isEmpty(); ui->sendButton->setDisabled(boo_dis); } //发送信息 void chat::appendMessageSlot() { //获取输入框内容，然后清空 QString content = ui->writeMessageEdit->toPlainText(); if (content.isEmpty()) { QMessageBox::warning(this, "出错", QString::fromLocal8Bit("发送的内容不能为空")); return; } nowDateTime = QDateTime::currentDateTime();//获取时间 //按指定格式拼合字符串 ui->showMessageEdit->append( QString("\n[%1] %2 %3\n%4") .arg(nowDateTime.toString("yyyy-MM-dd hh:mm:ss")) .arg(m_str_userName) .arg(QString::fromLocal8Bit(" :")) .arg(content) ); QDataStream out;//流 if (m_bool_server) { out.setDevice(m_p_serverSocket); } else { out.setDevice(m_p_clientSocket); } int mark = 0;//普通信息代号 //发送代号+用户名=信息 out << mark; out << m_str_userName << content; ui->writeMessageEdit->clear(); } //创建服务器Socket 监听连接 void chat::socketServer() { m_p_server = new QTcpServer(this);//创建TCP 服务器用于监听socket连接 m_p_serverSocket = new QTcpSocket(this);//创建套接字 m_p_server->listen(QHostAddress::Any, port);//监听 socket连接 //设置 有新连接信号，触发函数 connect(m_p_server, SIGNAL(newConnection()), this, SLOT(newConnectionSlot())); } //有新的连接时。槽 void chat::newConnectionSlot() { m_p_serverSocket = m_p_server->nextPendingConnection(); //有数据来时， connect(m_p_serverSocket, SIGNAL(readyRead()), this, SLOT(newDataSlot())); connect(m_p_serverSocket, SIGNAL(disconnected()), this, SLOT(deleNameSlot())); } //创建客户端Socket 与服务器连接 void chat::socketClient(QString host) { m_p_clientSocket = new QTcpSocket(this); m_p_clientSocket->connectToHost(host, port); //当成功连接时，名字list框中加入用户名 connect(m_p_clientSocket, SIGNAL(connected()), this, SLOT(addSlot())); connect(m_p_clientSocket, SIGNAL(readyRead()), this, SLOT(newDataSlot())); connect(m_p_clientSocket, SIGNAL(disconnected()), this, SLOT(deleNameSlot())); } //在名字list框中加入用户名 void chat::addSlot() { QString content; QDataStream out(m_p_clientSocket);//Qt socket 数据传输的方式 int mark = 11; //把socket看成流使用 out << mark;//发送代号11+用户名， 告诉服务器，连接成功了， out << m_str_userName << content; } //接收信息 void chat::newDataSlot() { int mark; QString hisName; QString content; QDataStream in;//流对象 if (m_bool_server) { in.setDevice(m_p_serverSocket);//把服务器的Sokcet当成流 } else { in.setDevice(m_p_clientSocket);//把客户端的Sokcet当成流 } in >> mark;//读取代号 // 如果代号是11，则是客户端加入。添加用户名 if (mark == 11) //addList { in >> hisName >> content; if (content.isEmpty()) { ui->onlineMessageList->addItem(hisName);//添加用户名 if (m_bool_server) { QString content; QDataStream out(m_p_serverSocket);//执行相同代号，让客户端也添加用户名 int mark = 11; out << mark; out << m_str_userName<< content; } } return; } //代号0.普通信息 else if (mark == 0) //message { in >> hisName >> content;//读信息 nowDateTime = QDateTime::currentDateTime();//时间 //按照指定格式，拼合 显示信息， ui->showMessageEdit->append( QString("\n[%1] %2 %3\n%4") .arg(nowDateTime.toString("yyyy-MM-dd hh:mm:ss")) .arg(hisName) .arg(QString::fromLocal8Bit(" :")) .arg(content) ); return; } } //断开连接时，删除用户名 void chat::deleNameSlot() { ui->onlineMessageList->takeItem(1); }