基于QT+Linux的网络聊天室

#include "tcpclient.h" #include "ui_tcpclient.h" #include <QHostInfo> #include <QMessageBox> TcpClient::TcpClient(QWidget *parent) : QMainWindow(parent), ui(new Ui::TcpClient) { ui->setupUi(this); setWindowTitle(tr("TCP Client")); serverIP = new QHostAddress(); QObject::connect(ui->enterBtn,SIGNAL(clicked()),this,SLOT(slotEnter())); connect(ui->sendButton,SIGNAL(clicked()),this,SLOT(slotSend())); ui->sendButton->setEnabled(false); this->status=false; } TcpClient::~TcpClient() { delete ui; } void TcpClient::slotEnter() { if(!status) { QString ip = ui->serverIPLineEdit->text(); if(!serverIP->setAddress(ip)) { QMessageBox::information(this,tr("error"),tr("server ip address error!")); return; } if(ui->userNameLineEdit->text()==" ") { QMessageBox::information(this,tr("error"),tr("User name error!")); return; } userName = ui->userNameLineEdit->text(); tcpSocket = new QTcpSocket(this); connect(tcpSocket,SIGNAL(connected()),this,SLOT(slotConnected())); connect(tcpSocket,SIGNAL(disconnected()),this,SLOT(slotDisconnected())); connect(tcpSocket,SIGNAL(error(QAbstractSocket::SocketError)),this,SLOT(slotError(QAbstractSocket::SocketError))); connect(tcpSocket,SIGNAL(readyRead()),this,SLOT(dataReceived())); port=ui->portLineEdit->text().toInt(); tcpSocket->connectToHost(*serverIP,port); status=true; } else { int length = 0; QString msg = userName+tr(":leave chat Room"); if((length=tcpSocket->write(msg.toLatin1(),msg.length()))!=msg.length()) { return; } tcpSocket->disconnectFromHost(); status=false; } } void TcpClient::slotConnected() { ui->sendButton->setEnabled(true); ui->enterBtn->setText(tr("leave")); int length = 0; QString msg = userName + tr(":Enter Chat room"); if((length=tcpSocket->write(msg.toLatin1(),msg.length()))!=msg.length()) { return; } } void TcpClient::slotError(QAbstractSocket::SocketError) { QMessageBox::information(this,tr("Error"),tr("Error")); } void TcpClient::slotSend() { if(ui->sendLineEdit->text()==" ") { return; } QString msg = userName+":"+ui->sendLineEdit->text(); tcpSocket->write(msg.toLatin1(),msg.length()); ui->sendLineEdit->clear(); } void TcpClient::dataReceived() { while(tcpSocket->bytesAvailable()>0) { QByteArray datagram; datagram.resize(tcpSocket->bytesAvailable()); QHostAddress sender; tcpSocket->read(datagram.data(),datagram.size()); QString msg = datagram.data(); ui->contentListWidget->addItem(msg.left(datagram.size())); } } void TcpClient::slotDisconnected() { QMessageBox::information(this,tr("Disconnected!"),tr("Disconnected!")); ui->sendButton->setEnabled(false); ui->enterBtn->setText(tr("Enter")); }