基于Qt简单聊天程序-具体步骤-详细注释.docx

基于qt编写的c/s模型的简单聊天程序开发Qt工具1,选择新建工程2选择Qt4GuiApplication工程。（带Ul界面编辑的工程）3取工程名C_S_Socket。路径随意,不要有任何中文Next4默认即可，Next（这是为此次工程选择要添加的头文件。我们不需要其他的功能。默认）5 Baseclass选择QDiaIog（IClassname改MainDlgoNext（我们是基于Qt界面编程的嘛。所以就选QDialogQt窗口类嚷）6 Finish完成（这里是编辑器告诉我们生成了如下文件）1点击maindlg.ui进入主界面窗体设计成如下2设置各个控件的对象名（不能同名，系统用对象名找到控件。命名标准方便自己识别）效劳器睢项选择框：radioBu11on_Server客户端雅项选择框：radioButton_CIientIP地址框：lineEdit_Address用户名框：1IneEditName离开按钮：WayButton进入按钮：GnterButton3创立一个窗体类，用于发送接收信息的窗体选择窗体样式。修改类名chat,下一步完成（chat：聊天的意思）4第二窗体设计如下窗体控件对象名如下显示信息框：ShowMessageEdit输入信息框：WritcMessageEdit用户名显示列表：OnIineMeSSageLiSt关于按钮：aboutButton发送按钮：SendButton界面等操作到此结束！!2023 年 12 月 8 日 16:47:31代码贴在后面。7/昆：代码写完后编译会出错！在C_S_Socket.pro工程文件的最后加上QT+=network编译就不会出错了(不知道什么意思，难道是为Qt参加网络的支持？)代码#ifndefMAINDLGH#defineMAINDLG_H#includc<QDialog>namespaceUiclassMainDlg;classMainDlg:publicQDialogQ_OBJECTpublic:MainDlg(QWidget*parent=O);-MainDlgO;boolm_bool_server;判断选择的方式protected:voidchangeEvent(QEvcnt*e);voidshowChatWindow();voidsendEnterMessage(QString,QString);private:Ui:MainDlg*ui;voidenterSlot();voidOnSelectServerO;voidOnSelectClientO;；#endifMAINDLG_H#include"maindlg.h,r#include,'uLmaindlg.h,'#include<QMessageBox>MainDlg:MainDlg(QWidget*parent):QDialog(parent),ui(newUi:MainDlg)ui->setupUi(this);"离开按钮点击事件的连接connect(ui->awayButton,SIGNAL(clicked(),qApp,SLOT(quit();进入按钮点击事件的连接connect(ui->enterButton,SIGNAL(clicked(),this,SLOT(enterSlot();选择效劳器单项选择按钮点击事件的连接connect(ui->radioButton_Server,SIGNAL(clicked(),this,SLOT(OnSelectServer();选择客户端单项选择按钮点击事件的连接connect(ui->radioButton-Client,SIGNAL(clickcd(),this,SLOT(OnSelectClient();MainDlg-MainDIgOdeleteui;产*选择效劳器单项选择按钮的点击消息voidMainDlg:OnSelectServer()m_bool_server=true;ui->lineEdicAddress->setTcxt(,n,);if(ui->lineEdit-Namc->text().isEmpty()ui->lincEdit_Name->text()=,Clicnt')ui->lineEdicName->setText(,Server);*选择客户端单项选择按钮的点击消息voidMainDlg:OnSclectClient()m_booLserver=false;ui->lineEdit-Address->setText(,l27.0.0.');if(ui->lineEdit_Name->text().isEmpty()ui->lineEdit_Name->text()=',ServerM)ui->lineEdit_Name->setText('Client);voidMainDlg:changeEvent(QEvent*e)QDialog:changeEvent(e);switch(e->type()caseQEvent:LanguageChange:ui->retranslateUi(this);break;default:break;voidMainDlg:enterSlot()if(ui->lineEdit_Name->text().isEmptyO)QMessageBoxmess;mess.setFont(QFont("SansSerif12,50);mess.warning(this,QString:ifroniLocalSBitC11出错")，QString:zfronLocal8Bit(',<fontSiZe=5>请输入正确的昵称,谢谢!<font>");return;"发射信号emitsendEterMessage(iL->lieEdit-Nae->text()1ui->lineE<iit-Address->text();emitshowChatWindow();#ifndefCHAT_HdefineCHAT_H#include<QDialog>#include"maindlg.h,r#include<QDateTime>#include<QtNetworkQTcpServer>lcp协议的效劳器监听连接类#include<QtNetworkQTcpSocket>Tcp协议的Socket类#inclucle<QtNetworkQHostAddress>namespaceUiclasschat;ClaSSchat:publicQDialogQ_OBJECTpublic:chat(QWidget*parunt=0);chat();voidSOCkUtSerVCr0;启动效劳器监听连接voidsocketCliet(QStringhost)/与效劳器连接MainDlg*p_my_dlg;"主界面指针intPOrtJ/端口号QStringm_str_userName;用户名boolrn_bool_servur;"是效劳器还是客户端/"cp协议的效劳器Socket类QTcpServer*m_p_server;/Tcp协议的效劳器监听连接类QTcpSocket*m_p_serverSoket;效劳器SocketQTcpSocket*m_p_clientSOCket;客户端SocketQDateTimenowDateTie;时间protected:voidchangeEvent(QEvent*e);private:Ui:Chat*ui;voidShOWAndHideSlOt();显示本窗体关闭主窗体voidChangCBUttOnStatCSIOt();/如果输入框为空，那么发送按钮不能使用voidCreateAboUtSIOt();关于信息voidcnterSlot(QStringname,QStringhost);选择效劳器或客户端voidncwConncctionSlot()y/连接来时，效劳器与客户端创立连接voidnewDataSlot();有数据来时voiddcleNameSlot();/voidaddSlot();voidappcndMessagcSlot();；#endifCHAT-H#include"chat.h"#include"ui_chat.h"#include<QMessageBox>chat:xhat(QWidget*parent):QDialog(parent),ui(newUi:chat)Iui->setupUi(this);设置UI设计的界面的控件m_p_server=NULL;m_p_serverSocket=NULL;m_p_c1ientSocket=NULL;p_my_dlg=newMainDIg，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,SlGNAL(ShowChatWindowO),this,SLOT(showAndHideSlotO);ConneCt(p_my_dlg,SIGNAL(sendEnterMessage(QString,QString),this,SLOT(enterSlot(QString,QString);connect(ui->writeMessageEdit,SIGNAL(IextChangedO),this,SLOT(ChangeButtonStateSIotO);COnneCt(Ui-XiboutButton,SIGNAL(CIiCkUd(),this,SLOT(createAboutSlot();connect(ui->sendButton,SlGNAL(clicked(),this,SLOT(appendMessageSlot();Chat:chat()deleteui;"本窗体创立时由系统自动调用voidchat:xhangeEvent(QEvent*e)QDialogixhangeEvent(C);switch(e->type()caseQEventziLanguageChange:ui->rctranslatcUi(this);/设置本船体的些属性break;default:break;显示关闭主窗体，显示本窗体voidChat:ShOWAndHideSIUt()deletep_my_dlg;this->show();"显示关于信息voidchat:XreateAboutSlotOQMessageBoxmess;mess.setFont(QFont(,rSansSerif,12,50);mess.warning(this,QStrirg=fromLal8Bit("关于"),QString:fromLocal8Bit("<fontSiZe=5>基于qt编写的C/S模型的简单聊天程序<fbnt>");根据选择p_my_dlg->m_bool_server选择相应操作voidchat:enterSlot(QStringname,QStringhost)(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();elsesocketClient(host);1ui->sendButton->setDisabled(fake);发送按钮不能使用m_str_userName=name;ui->onlineMessageList->addItem(name);"如果输入框为空，那么发送按钮不能使用voidchat:IchangcButtonStateSlotOblboo_dis=ui->writcMessageEdit->toPlainText().isEmpty();ui->sendButton->setDisablcd(boo_dis);发送信息voidchat:appcndMessageSlot()获取输入框内容，然后清空QStringcontent=ui->writeMessageEdit->toPlainText();if(contcnt.isEmpty()QMeSSageBox:Warning(this,"出错"，QString:frumLocal8Bit(”发送的内容不能为空return;nowDateTime=QDateTimc:CUITCntDatCTime();获取时间按指定格式拼合字符串ui->showMessageEdit->append(QString(,n%l%2%3n%4,').arg(nowDateTime.toString(,yyyy-MM-ddhh:mm:ss”).arg(m_str_userName).arg(QString:zfiomLocal8BitC,说道:").arg(content);QDataStreamOUt;/流if(m_bool_server)out.setDevice(m_p_serverSocket);elseout.setDevice(m_p_clientSocket);intmark=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();创立效劳器SOCket监听连接voidchat:socketServer()m_p_server=newQTCPSerVei"(this);创立TCP效劳器用于监听SOCket连接m_p_serverSocket=newQTCPSOCkCt(this);创立套接字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(newConncctionSlot();"有新的连接时。槽voidchat:newConnectionSlot()m_p一SCrVerSoCkCt=m_p_server->nextPcndingConnection();"有数据来时，connect(m_p_serverSocket,SIGNAL(readyRcad(),this,SLOT(newDataSlot();connect(m_p_serverSocket,SlGNAL(disconnected。),this,SLOT(JeleNameSlotO);"创立客户端SOCkUt与效劳器连接voidchat:IsockctClicnUQStiinghost)m_p_clientSocket=newQTcpSockeKthis);11VP-ClientSocket->connectToHost(host,port);/当成功连接时，名字IiSt框中参加用户名connect(m_p_clientSocket,SIGNAL(ConneCted(),this,SLOT(addSlot();connect(m_p_clientSocket,SIGNAL(readyRcad(),this,SLOT(newDataSlot();connect(m_p_clientSocket,SIGNAL(disconnectcd(),this,SLOT(deleNamcSlot();"在名字IiSt框中参加用户名voidchat:addSlot()IQStringcontent;QDataStreamout(m_p_clientSocket);/Qtsocket数据传输的方式intmark=11;把socket看成流使用out<<mark;"发送代号11+用户名，告诉效劳器，连接成功了，out<<m_str_userName<<content;接收信息voidchat:newDataSlot()intmark;QStringhisName;QStringcontent;QDataStreamin;/流对象if(m_bool_server)in.setDevice(m_p_serverSocket);把效劳器的Sokcet当成流elseEsctDeviCe(ITI一P-CliCntSOCkCt);把客户端的Sokcet当成流in»mark;读取代号/如果代号是11,那么是客户端参加。添加用户名if(mark=11)/ZaddListin»hisName»content;if(content.isEmpty()ui->onlineMessageList->addItem(hisName)JU11户名if(m_bool_server)QStringcontent;QDataStrcamout(m_p_serverSockct);执行相同代号，让客户端也添加用户名intmark=11;out«mark;out«m_str_userName<<content;)return;elseif(mark=0)/messageIin»hisName»Contentj读信息noWDateTime=QDateTime:CUrrCntDateTime();/时间按照指定格式，拼合显示信息，ui->showMessageEdit->append(QString(,n%l%2%3n%4).arg(nowDateTime.toString(,yyyy-MM-ddhh:mm:ss”).arg(hisName).arg(QStringkf>mLocal8Bit("说道:").arg(content);return;/断开连接时，删除用户名voidchat:deleNameSlot()Iui->onlineMessageList->takeItem(1);#include<QtGuiQApplication>#include',chaLh"intmain(intargc,char*argv)QApplicatioiia(argc,agv);chat*p_chart=newchat;returna.exec();长沙北邮3GZ19班雷建军2023年12月8日16:51:49