devbox
知新_RL
这个屌丝很懒，什么也没留下！
关注作者
热门标签
热门文章
当前位置:   article > 正文

Qt C++ TCP服务端响应多客户端通讯

作者：知新_RL | 2024-06-11 18:01:59

赞

踩

Qt C++ TCP服务端响应多客户端通讯

本示例使用的设备：WIFI无线4G网络RFID云读卡器远程网络开关物流网阅读器TTS语音-淘宝网 (taobao.com)

  1. #include "mainwindow.h"
  2. #include "ui_mainwindow.h"
  3. #include "QMessageBox"
  4. #include <QDebug>
  5. #include <exception>
  6. #include <QTcpServer>
  7. #include <QTcpSocket>
  8. #include <QObject>
  9. #include <QTime>
  10. #include <QTreeWidgetItem>
  11. #include <QClipboard>
  12.  
  13. bool listening=false;
  14. QTcpServer m_server;
  15. QTcpSocket m_socket;
  16.  
  17. //获取本机所有网卡IP------------------------------------------------------------------------------------------------------
  18. QStringList getAllIPAddresses() {
  19.     QStringList ips;
  20.     QList<QHostAddress> list = QNetworkInterface::allAddresses();
  21.     for (int i = 0; i < list.size(); ++i) {
  22.         QHostAddress address = list.at(i);
  23.         // 检查是否为IPv4地址，并排除回环地址
  24.         if (address.protocol() == QAbstractSocket::IPv4Protocol && address != QHostAddress::LocalHost) {
  25.             ips << address.toString();
  26.         }
  27.     }
  28.     return ips;
  29. }
  30.  
  31. //获取系统现时间-------------------------------------------------------------------------------------------------------------
  32. QString getsystime(){
  33.     QTime time = QTime::currentTime();
  34.     QString timeStr = time.toString("hh:mm:ss.zzz");
  35.     return timeStr;
  36. }
  37.  
  38. //获取系统日期时间-------------------------------------------------------------------------------------------------------------
  39. QString getsysdatetime(){
  40.     QDateTime currentDateTime = QDateTime::currentDateTime();
  41.     QString dateTimeString = currentDateTime.toString("yy-MM-dd hh:mm:ss");
  42.     return dateTimeString;
  43. }
  44.  
  45. //QByteArray转16进制QString------------------------------------------------------------------------------------------------
  46. QString ByteArrayToHexString(QByteArray data){
  47.     QString ret(data.toHex().toUpper());
  48.     int len = ret.length()/2;
  49.     for(int i=1;i<len;i++)
  50.     {
  51.         ret.insert(2*i+i-1," ");
  52.     }
  53.     return ret;
  54. }
  55.  
  56. //通讯报文显示-----------------------------------------------------------------------------------------------------
  57. void MainWindow::listadditems(int ctr,QString listinfo){
  58.     switch (ctr){
  59.     case 0:
  60.         if(ui->listWidget_report->count()>30){
  61.             ui->listWidget_report->clear();
  62.         }
  63.         ui->listWidget_report->addItem(listinfo);
  64.         ui->listWidget_report->setCurrentRow(ui->listWidget_report->count()-1);
  65.         break;
  66.     case 1:
  67.         ui->listWidget_online->addItem(listinfo);
  68.         ui->listWidget_online->setCurrentRow(ui->listWidget_online->count()-1);
  69.     }
  70. }
  71.  
  72.  
  73. MainWindow::MainWindow(QWidget *parent)
  74.     : QMainWindow(parent)
  75.     , ui(new Ui::MainWindow)
  76. {
  77.     ui->setupUi(this);
  78.     ui->TEPort->setPlainText("39169");        //出厂默认39169端口
  79.     ui->spinBox_dispdelay->setValue(20);
  80.     ui->spinBox_swit->setValue(30);
  81.     ui->spinBox_voice->setValue(8);
  82.     ui->textEdit_disp->setText("欢迎您使用我们的网络读卡器！");
  83.     ui->textEdit_tts->setText("感谢您的使用，您的支持是我们最大的动力！");
  84.  
  85.     QStringList ips = getAllIPAddresses();
  86.     foreach (QString ip, ips) {
  87.         ui->CBIP->addItem(ip);
  88.     }
  89.     if(ui->CBIP->count()<1){
  90.         QMessageBox::information(NULL, "提示", "未搜索到本机的网卡，系统不能正常运行！");
  91.         delete ui;
  92.     }
  93. }
  94.  
  95. MainWindow::~MainWindow()
  96. {
  97.     delete ui;
  98. }
  99.  
  100. //启动、关闭TCP服务-------------------------------------------------------------------------------------------------------
  101. void MainWindow::initserver(){
  102.     try{
  103.         if(ui->pushButton_initserver->text()=="开启TCP服务"){
  104.             QString ipstr=ui->CBIP->currentText();
  105.             QHostAddress localeip(ipstr);
  106.             quint16 port=ui->TEPort->toPlainText().toUInt();
  107.  
  108.             m_server = new QTcpServer(this);
  109.             m_server->listen(localeip, port);
  110.             connect(m_server, &QTcpServer::newConnection, this, &MainWindow::onNewConnection);
  111.  
  112.             listening=true;
  113.             ui->pushButton_initserver->setText("停止");
  114.             listadditems(0,getsystime()+" Tcp Server is listening...");
  115.         }else{
  116.             listening=false;
  117.             m_server->close();
  118.             ui->pushButton_initserver->setText("开启TCP服务");
  119.             for(int i=0;i<tcpclientlist.count();i++){
  120.                 tcpclientlist.at(i)->close();
  121.                 //tcpclientlist.remove(i);
  122.                 ui->listWidget_online->takeItem(i);
  123.             }
  124.             tcpclientlist.clear();
  125.             listadditems(0,getsystime()+" Tcp Server is close! ");
  126.         }
  127.     }
  128.     catch(_exception)
  129.     {
  130.         listening=false;
  131.         ui->pushButton_initserver->setText("开启TCP服务");
  132.     }
  133. }
  134.  
  135. //侦听到有新的TCP客户端接入服务--------------------------------------------------------------------------------------------
  136. void MainWindow::onNewConnection()
  137. {
  138.     m_socket = m_server->nextPendingConnection();
  139.     tcpclientlist.append(m_socket);
  140.  
  141.     QString RemoIp=m_socket->peerAddress().toString();
  142.     QString RemoPort=QString::number( m_socket->peerPort());
  143.     listadditems(1,RemoIp+":"+RemoPort);
  144.     listadditems(0,getsystime()+" NewConn "+RemoIp+":"+RemoPort);
  145.  
  146.     connect(m_socket, &QTcpSocket::readyRead, this, &MainWindow::onReadyRead);
  147.     connect(m_socket, &QTcpSocket::disconnected, this, &MainWindow::onClientDisconnected);
  148.     connect(m_socket, &QTcpSocket::connected, this, &MainWindow::onConnected);
  149. //  connect(m_socket, &QTcpSocket::stateChanged, this, &MainWindow::onStateChanged);
  150.  
  151. }
  152.  
  153.  
  154. //接收到TCP客户端传送来来的数据-------------------------------------------------------------------------------------------
  155. void MainWindow::onReadyRead()
  156. {
  157.     QByteArray buffer;
  158.     for(int row=0;row<tcpclientlist.count();row++){
  159.         m_socket=tcpclientlist.at(row);
  160.         buffer = m_socket->readAll();
  161.         if(buffer.length()!=0){
  162.             QString RemoIp=m_socket->peerAddress().toString();
  163.             QString RemoPort=QString::number( m_socket->peerPort());
  164.             listadditems(0,getsystime()+" Receive: "+RemoIp+":"+RemoPort+"    "+ByteArrayToHexString(buffer));
  165.  
  166.             unsigned char databuff[buffer.length()];
  167.             std::copy(buffer.begin(), buffer.end(), databuff);
  168.  
  169.             switch (databuff[0]){
  170.             case 0xc1:
  171.             case 0xcf:
  172.                  Analyze_c1_cf(row,databuff,buffer.length());          //解析读取IC卡卡号
  173.                  break;
  174.  
  175.             case 0xd1:
  176.             case 0xdf:
  177.                  Analyze_d1_df(row,databuff,buffer.length());          //解析读取ID卡卡号
  178.                  break;
  179.  
  180.             default:
  181.                 break;
  182.             }
  183.         }
  184.     }
  185. }
  186.  
  187.  
  188. //侦测到TCP客户端断开连接---------------------------------------------------------------------------------------------
  189. void MainWindow::onClientDisconnected()
  190. {
  191.     QString RemoIp=m_socket->peerAddress().toString();
  192.     quint16 RemoPort= m_socket->peerPort();
  193.     for(int i=0;i<tcpclientlist.count();i++){
  194.         if(tcpclientlist.at(i)->peerAddress().toString()==RemoIp && tcpclientlist.at(i)->peerPort()==RemoPort){
  195.             tcpclientlist.remove(i);
  196.             ui->listWidget_online->takeItem(i);
  197.             listadditems(0,getsystime()+" Disconn: "+RemoIp+":"+QString::number(RemoPort));
  198.         }
  199.     }
  200. }
  201.  
  202.  
  203. void MainWindow::onConnected()
  204. {
  205.     QString RemoIp=m_socket->peerAddress().toString();
  206.     QString RemoPort=QString::number( m_socket->peerPort());
  207. }
  208.  
  209. //void MainWindow::onStateChanged(QAbstractsocket::SocketState socketstate){
  210. //    switch (socketstate){
  211. //    case QAbstractSocket::UnconnectedState:ui->labConnectState->setText("Unconnectedstate");break;
  212. //    case QAbstractSocket::HostLookupState:ui->labConnectState->setText("HostLookupstate");break;
  213. //    case QAbstractSocket::ConnectedState:ui->labConnectState->setText("connectedstate");break;
  214. //    case QAbstractSocket::ConnectingState:ui->labConnectState->setText("connectingstate");break;
  215. //    case QAbstractSocket::BoundState: ui->labConnectState->setText("Boundstate");break;
  216. //    case QAbstractSocket::ClosingState:ui->labConnectState->setText("closingstate");break;
  217. //    case QAbstractSocket::ListeningState:ui->labConnectState->setText("listeningstate");break;
  218. //    }
  219. //}
  220.  
  221.  
  222. //解析读取IC卡卡号-------------------------------------------------------------------------------------------------------------------
  223. void MainWindow::Analyze_c1_cf(int socketid,unsigned char databuff[], qint64 buflen)
  224. {
  225.     QString IPAddress=QString::asprintf("%d", databuff[1])+"."+QString::asprintf("%d", databuff[2])+"."+QString::asprintf("%d", databuff[3])+"."+QString::asprintf("%d", databuff[4]); //设备IP地址,广域网上使用，一般不对此IP回应，而是对数据流的 ip及端口 回应
  226.     QString DeviceNumber=QString::asprintf("%05d",databuff[5]+databuff[6]*256);   //设备自编机号
  227.     QString FrameNumber=QString::asprintf("%05d",databuff[7]+databuff[8]*256);    //数据包号
  228.     int cardnolen=databuff[9];
  229.  
  230.     QString CardnoHexZ="";          //16进制卡号正码
  231.     QString CardnoHexF="";          //16进制卡号反码
  232.     for (int i=0;i<cardnolen;i++){
  233.         CardnoHexZ=CardnoHexZ+QString::asprintf("%02X", databuff[10+i]);
  234.         if(i<4){CardnoHexF=CardnoHexF+QString::asprintf("%02X", databuff[9+cardnolen-i]);}   //只取4个字节计算8H10D反码
  235.     }
  236.  
  237.     QString SerialNumber="";        //设备全球唯一硬件序号
  238.     for (int i=10+cardnolen;i<buflen;i++){
  239.         SerialNumber=SerialNumber+QString::asprintf("%02X", databuff[i]);
  240.     }
  241.  
  242.     bool status;
  243.     QString Cardno8H10D=QString::asprintf("%010u",CardnoHexF.toUInt(&status,16));  //转8H10D反码卡号
  244.  
  245.     QString  DispInf;
  246.     if (databuff[0]==0xc1){DispInf="读取IC卡号,";}else{DispInf="IC卡离开读卡器,";}
  247.     DispInf=DispInf+"设备IP:"+IPAddress+",机号:"+DeviceNumber+",数据包号:"+FrameNumber+",16进制卡号:"+CardnoHexZ+",转8H10D反码:"+Cardno8H10D+",设备全球唯一序号:"+SerialNumber;
  248.     ui->plainTextEdit_msg->setPlainText(DispInf);
  249.  
  250.     if(ui->checkBox_Resp->isChecked()){Respondinfo(socketid,getsysdatetime()+"卡号:"+Cardno8H10D);}  //回应驱动设备显示+蜂鸣响声
  251. }
  252.  
  253. //解析读取ID卡卡号-------------------------------------------------------------------------------------------------------------------
  254. void MainWindow::Analyze_d1_df(int socketid,unsigned char databuff[], qint64 buflen)
  255. {
  256.     QString IPAddress=QString::asprintf("%d", databuff[1])+"."+QString::asprintf("%d", databuff[2])+"."+QString::asprintf("%d", databuff[3])+"."+QString::asprintf("%d", databuff[4]); //设备IP地址,广域网上使用，一般不对此IP回应，而是对数据流的 ip及端口 回应
  257.     QString DeviceNumber=QString::asprintf("%05d",databuff[5]+databuff[6]*256);   //设备自编机号
  258.     QString FrameNumber=QString::asprintf("%05d",databuff[7]+databuff[8]*256);    //数据包号
  259.  
  260.     QString CardnoHexZ="";          //16进制卡号正码
  261.     QString CardnoHexF="";          //16进制卡号反码
  262.     for (int i=0;i<5;i++){
  263.         CardnoHexZ=CardnoHexZ+QString::asprintf("%02X", databuff[9+i]);
  264.         if(i<4){CardnoHexF=CardnoHexF+QString::asprintf("%02X", databuff[9+3-i]);}   //只取4个字节计算8H10D反码
  265.     }
  266.  
  267.     QString SerialNumber="";        //设备全球唯一硬件序号
  268.     for (int i=9+5;i<buflen;i++){
  269.         SerialNumber=SerialNumber+QString::asprintf("%02X", databuff[i]);
  270.     }
  271.  
  272.     bool status;
  273.     QString Cardno8H10D=QString::asprintf("%010u",CardnoHexF.toUInt(&status,16));  //转8H10D反码卡号
  274.  
  275.     QString  DispInf;
  276.     if (databuff[0]==0xd1){DispInf="读取ID卡号,";}else{DispInf="ID卡离开读卡器,";}
  277.     DispInf=DispInf+"设备IP:"+IPAddress+",机号:"+DeviceNumber+",数据包号:"+FrameNumber+",16进制卡号:"+CardnoHexZ+",转8H10D反码:"+Cardno8H10D+",设备全球唯一序号:"+SerialNumber;
  278.                                                                                                                                                                           ui->plainTextEdit_msg->setPlainText(DispInf);
  279.  
  280.     if(ui->checkBox_Resp->isChecked()){Respondinfo(socketid,getsysdatetime()+"卡号:"+Cardno8H10D);}  //回应驱动设备显示+蜂鸣响声
  281. }
  282.  
  283.  
  284. void MainWindow::on_btnClose_clicked()
  285. {
  286.     m_server->close();
  287. }
  288.  
  289.  
  290. //向指定的客户端发送数据--------------------------------------------------------------------------------------------------------------
  291. void MainWindow::SendBufToSockID(int socketid,QByteArray rbuffer){
  292.     m_socket=tcpclientlist.at(socketid);
  293.     m_socket->write(rbuffer);
  294.  
  295.     QString RemoIp=m_socket->peerAddress().toString();
  296.     QString RemoPort=QString::number( m_socket->peerPort());
  297.     QString SendHex=getsystime()+" Send To: "+(RemoIp+":"+RemoPort+"             ").mid(0,22);
  298.     SendHex=SendHex+ByteArrayToHexString(rbuffer);
  299.     listadditems(0,SendHex);
  300. }
  301.  
  302.  
  303. void MainWindow::on_pushButton_initserver_clicked()
  304. {
  305.     initserver();
  306. }
  307.  
  308.  
  309. //驱动读卡器蜂鸣响声-----------------------------------------------------------------------
  310. void MainWindow::on_btnSendbeep_clicked()
  311. {
  312.     QListWidgetItem *item = ui->listWidget_online->currentItem();
  313.     int row = ui->listWidget_online->row(item);
  314.     if(row<0){
  315.         QMessageBox::critical(this, "警告", "请选择一台在线设备再执行此功能！", QMessageBox::Ok);
  316.     }else{
  317.         QByteArray sendData;
  318.         sendData.append(0x96);                             //功能码
  319.         quint16 devno=0;
  320.         sendData.append(devno % 256);                      //机号低位
  321.         sendData.append(devno / 256);                      //机号高位，高低位都为0表示任意机号
  322.         sendData.append(ui->CBbeep->currentIndex());       //蜂鸣响声代码
  323.         SendBufToSockID(row,sendData);
  324.     }
  325. }
  326.  
  327. //驱动读卡器开启继电器-----------------------------------------------------------------------
  328. void MainWindow::on_btnswitchon_clicked()
  329. {
  330.     QListWidgetItem *item = ui->listWidget_online->currentItem();
  331.     int row = ui->listWidget_online->row(item);
  332.     if(row<0){
  333.         QMessageBox::critical(this, "警告", "请选择一台在线设备再执行此功能！", QMessageBox::Ok);
  334.     }else{
  335.         QByteArray sendData;
  336.         sendData.append(0x78);                             //功能码
  337.         quint16 devno=0;
  338.         sendData.append(devno % 256);                      //机号低位
  339.         sendData.append(devno / 256);                      //机号高位，高低位都为0表示任意机号
  340.         QString swithno="F"+QString::asprintf("%d",ui->CBSwitch->currentIndex());
  341.         bool status;
  342.         sendData.append(swithno.toUInt(&status,16));       //选择继电器
  343.         quint16 deltime=ui->spinBox_swit->value();
  344.         sendData.append(deltime % 256);                    //开启延时低位
  345.         sendData.append(deltime / 256);                    //开启延时高位
  346.         SendBufToSockID(row,sendData);
  347.     }
  348. }
  349.  
  350. //驱动读卡器关闭已开启的继电器-----------------------------------------------------------------
  351. void MainWindow::on_btnswitchoff_clicked()
  352. {
  353.     QListWidgetItem *item = ui->listWidget_online->currentItem();
  354.     int row = ui->listWidget_online->row(item);
  355.     if(row<0){
  356.         QMessageBox::critical(this, "警告", "请选择一台在线设备再执行此功能！", QMessageBox::Ok);
  357.     }else{
  358.         QByteArray sendData;
  359.         sendData.append(0x78);                             //功能码
  360.         quint16 devno=0;
  361.         sendData.append(devno % 256);                      //机号低位
  362.         sendData.append(devno / 256);                      //机号高位，高低位都为0表示任意机号
  363.         QString swithno="E"+QString::asprintf("%d",ui->CBSwitch->currentIndex());
  364.         bool status;
  365.         sendData.append(swithno.toUInt(&status,16));       //选择继电器
  366.         quint16 deltime=ui->spinBox_swit->value();
  367.         sendData.append(deltime % 256);                    //开启延时低位
  368.         sendData.append(deltime / 256);                    //开启延时高位
  369.         SendBufToSockID(row,sendData);
  370.     }
  371. }
  372.  
  373. //驱动读卡器蜂鸣响声并显示文字---------------------------------------------------------------------
  374. void MainWindow::on_btnDispbeep_clicked()
  375. {
  376.     QListWidgetItem *item = ui->listWidget_online->currentItem();
  377.     int row = ui->listWidget_online->row(item);
  378.     if(row<0){
  379.         QMessageBox::critical(this, "警告", "请选择一台在线设备再执行此功能！", QMessageBox::Ok);
  380.     }else{
  381.         QByteArray sendData;
  382.         sendData.append(0x5A);                             //功能码
  383.         quint16 devno=0;
  384.         sendData.append(devno % 256);                      //机号低位
  385.         sendData.append(devno / 256);                      //机号高位，高低位都为0表示任意机号
  386.         sendData.append(ui->CBbeep->currentIndex());       //蜂鸣响声代码，255表示不响声
  387.         sendData.append(ui->spinBox_dispdelay->value());   //文字显示时长，
  388.         QString dispstr=ui->textEdit_disp->toPlainText()+"                                  ";  //加空格是为了确保满屏34位显示
  389.         QByteArray Dispbyte=dispstr.toLocal8Bit();
  390.         for(int i=0;i<34;i++){
  391.             sendData.append(Dispbyte[i]);
  392.         }
  393.         SendBufToSockID(row,sendData);
  394.     }
  395. }
  396.  
  397. //驱动读卡器蜂鸣响声+显示文字+播报TTS语音+开启继电器开关
  398. void MainWindow::on_btndispbeeptts_clicked()
  399. {
  400.     QListWidgetItem *item = ui->listWidget_online->currentItem();
  401.     int row = ui->listWidget_online->row(item);
  402.     if(row<0){
  403.         QMessageBox::critical(this, "警告", "请选择一台在线设备再执行此功能！", QMessageBox::Ok);
  404.     }else{
  405.         if(ui->spinBox_voice->value()>16){ui->spinBox_voice->setValue(16);} //tts最大语音取值16
  406.         QString strls="[v"+QString::asprintf("%d",ui->spinBox_voice->value())+"]";
  407.         strls=strls+ui->textEdit_tts->toPlainText().trimmed();
  408.         QByteArray SpeakArr=strls.toLocal8Bit();         //TS语音转换为Ansi码
  409.         quint8 speakbytes=SpeakArr.size();
  410.         quint8 dispbytes=34;                //双行显示屏显示长度34，四行屏显示长度72
  411.  
  412.         QByteArray sendData;
  413.         sendData.append(0x5c);                             //功能码
  414.         quint16 devno=0;
  415.         sendData.append(devno % 256);                      //机号低位
  416.         sendData.append(devno / 256);                      //机号高位，高低位都为0表示所有机
  417.         sendData.append(ui->CBbeep->currentIndex());       //蜂鸣响声代码,取值255表示不响
  418.  
  419.         QString swithno="F"+QString::asprintf("%d",ui->CBSwitch->currentIndex());
  420.         bool status;
  421.         sendData.append(swithno.toUInt(&status,16));       //选择继电器
  422.         quint16 deltime=ui->spinBox_swit->value();
  423.         sendData.append(deltime % 256);                    //延时低位
  424.         sendData.append(deltime / 256);                    //延时高位
  425.  
  426.         sendData.append(ui->spinBox_dispdelay->value());   //文字显示时长，
  427.         quint8 begindisp =0;                               //在显示屏中的哪个位置开始显示，一般取0
  428.         sendData.append(begindisp);
  429.         sendData.append(dispbytes);                        //显示文字长度
  430.         sendData.append(speakbytes);                       //tts语音长茺
  431.  
  432.         QString dispstr=ui->textEdit_disp->toPlainText()+"                                  ";  //加空格是为了确保满屏34位显示
  433.         QByteArray Dispbyte=dispstr.toLocal8Bit();
  434.         for(int i=0;i<dispbytes;i++){
  435.             sendData.append(Dispbyte[i]);       //显示信息
  436.         }
  437.         for(int i=0;i<speakbytes;i++){
  438.             sendData.append(SpeakArr[i]);       //TTS语音信息
  439.         }
  440.  
  441.         sendData.append(0x55);      //防干扰后缀
  442.         sendData.append(0xaa);
  443.         sendData.append(0x66);
  444.         sendData.append(0x99);
  445.         SendBufToSockID(row,sendData);
  446.     }
  447. }
  448.  
  449. //接收到刷卡数据立即回应--------------------------------------------------------------------------
  450. void MainWindow::Respondinfo(int socketid,QString Dispinf)
  451. {
  452.     QByteArray RespBuff;
  453.     RespBuff.append(0x5A);                             //功能码
  454.     quint16 devno=0;
  455.     RespBuff.append(devno % 256);                      //机号低位
  456.     RespBuff.append(devno / 256);                      //机号高位，高低位都为0表示任意机
  457.     RespBuff.append(ui->CBbeep->currentIndex());       //蜂鸣响声代码，255表示不响声
  458.     RespBuff.append(ui->spinBox_dispdelay->value());   //文字显示时长，
  459.     QString dispstr=Dispinf+"                                  ";  //加空格是为了确保满屏34位显示
  460.     QByteArray Dispbyte=dispstr.toLocal8Bit();
  461.     for(int i=0;i<34;i++){
  462.         RespBuff.append(Dispbyte[i]);
  463.     }
  464.  
  465.     m_socket=tcpclientlist.at(socketid);
  466.     m_socket->write(RespBuff);
  467.  
  468.     QString RemoIp=m_socket->peerAddress().toString();
  469.     QString RemoPort=QString::number( m_socket->peerPort());
  470.     QString SendHex=getsystime()+" Send To: "+(RemoIp+":"+RemoPort+"             ").mid(0,22);
  471.     SendHex=SendHex+ByteArrayToHexString(RespBuff);
  472.     listadditems(0,SendHex);
  473. }
  474.  
  475.  
  476. void MainWindow::on_btncopyreport_clicked()
  477. {
  478.     QString listinf;
  479.     int row=ui->listWidget_report->count();
  480.     if (row<1){
  481.         return;
  482.     }else{
  483.         for (int i=0;i<row;i++){
  484.             QListWidgetItem *item = ui->listWidget_report->item(i);
  485.             listinf=listinf+item->text()+"\n";
  486.         }
  487.         QClipboard *clipboard = QApplication::clipboard();
  488.         clipboard->setText(listinf);
  489.         QMessageBox::information(this, "提示", "显示数据报文已拷贝到剪切板");
  490.     }
  491. }
  492.

源码下载 ：https://download.csdn.net/download/zhangjin7422/89421064

声明：本文内容由网友自发贡献，不代表【wpsshop博客】立场，版权归原作者所有，本站不承担相应法律责任。如您发现有侵权的内容，请联系我们。转载请注明出处：https://www.wpsshop.cn/w/知新_RL/article/detail/704244
推荐阅读
相关标签

Copyright © 2003-2013 www.wpsshop.cn 版权所有，并保留所有权利。

  

闽ICP备14008679号