Qt 二维码扫描仪（SDK+串口)

#include "widget.h"

#include "ui_widget.h"

Widget::Widget(QWidget *parent) :

    QWidget(parent),

    ui(new Ui::Widget)

    ui->setupUi(this);

    Init();

    on_deviceCheck_clicked();

//    on_fallAsleep_clicked();

    on_wakeUp_clicked();        //保持常醒状态

Widget::~Widget()

    delete ui;

    UnInit();

void Widget::Init(){

    comDevice           = false;

    sdkDevice           = false;

    state               = State::INACTIVE;

    m_pPort             = new QSerialPort;

    m_getAppHld         = NULL;

    m_setQRable         = NULL;

    m_setBarcode        = NULL;

    m_SetBeepTime       = NULL;

    m_StartDevice       = NULL;

    m_SetBeep           = NULL;

    m_SetLed            = NULL;

    m_GetDecodeString   = NULL;

    m_ReleaseDevice     = NULL;

    m_ReleaseLostDevice = NULL;

    m_GetDevice         = NULL;

    m_ploadChat         = NULL;

    m_nChatRet          = 0;

    m_tempmsChatTime    = 0;

    m_detector.setInterval(1000);

    connect(&m_detector,&QTimer::timeout,this,&Widget::sdk_slotDetectData,Qt::QueuedConnection);

    connect(m_pPort,&QSerialPort::readyRead,this,&Widget::com_slotGetData,Qt::QueuedConnection);

    connect(this,&Widget::readySendMessage,this,&Widget::on_sendMessage_clicked,Qt::QueuedConnection);

//    if(m_udpSocket.bind(QHostAddress::LocalHost,59999,QAbstractSocket::ShareAddress|QAbstractSocket::ReuseAddressHint))

//        connect(&m_udpSocket,&QUdpSocket::readyRead,this,&Widget::analyzeCommand,Qt::QueuedConnection);

//    else

//        qDebug()<<"QR---Udp bind port failed";

void Widget::UnInit()

    //sdk

    if(m_detector.isActive())

        m_detector.stop();

    if(NULL != m_ploadChat)

        if(m_ploadChat->isLoaded())

            sdk_ReleaseDll();

            m_ploadChat->unload();

            delete m_ploadChat;

            m_ploadChat=NULL;

    //com

    if(m_pPort->isOpen())

        m_pPort->close();

    m_pPort->deleteLater();

//检测设备   ( 意锐RC532-4.2  / 图腾易讯E20  )

void Widget::on_deviceCheck_clicked()

    //1.加载dll_camera       2.getDevice()检测是否是yirui  3.dllDevice赋值

    sdk_LoadDllAndScanSDKQRDevice();

    //1.遍历USB设备，查找COM口 2.打开com口,并始终保持KEEP状态 3.comDevice赋值

    com_ScanUSBQRDevice();

    if(!sdkDevice&&!comDevice){

        qDebug("QR---************not found sdk&com QRDevice************");

    //没有设备的处理...

//接收到唤醒命令，开始解析/发送二维码数据

void Widget::on_wakeUp_clicked()

    state=State::ACTIVE;

    if(sdkDevice&&!m_detector.isActive())

        m_detector.start();

    if(comDevice)

        m_pPort->clear();  //clear com buffer，very important!

    return;

//接收到睡眠命令，停止解析/发送二维码数据

void Widget::on_fallAsleep_clicked()

    state=State::INACTIVE;

    if(sdkDevice&&m_detector.isActive())

        m_detector.stop();

    if(comDevice)

//发送

void Widget::on_sendMessage_clicked()

    QString temp;

    if(!m_strBuffer.isEmpty()){                 //缓存发送

        temp=m_strBuffer;

    }else if(!ui->lineEdit->text().isEmpty()){  //编辑栏发送

        temp=ui->lineEdit->text();

    }else{

        return;

    //send temp

    m_udpSocket.writeDatagram(temp.toLocal8Bit().data(),QHostAddress::LocalHost,RECEIVERUDPPORT);

    ui->textBrowser->append(temp);

    ui->lineEdit->clear();

    m_strBuffer.clear();

void Widget::sdk_slotDetectData()

    // timer: 1s 外部控制 开关

    // 持续调用m_GetDevice()会导致 句柄 50+飙升

//    int nDvcs = 0;

//    if(NULL != m_GetDevice)

//        nDvcs = m_GetDevice();

//    if(-1 == nDvcs)

//    {

//        m_nChatRet = 0;

////        m_szLog = QString("二维码设备有问题,请检查设备,并重启此软件!");

////        g_pLogger->WriteLog(m_szLog.toUtf8().data());

//    }

    if(1 == m_nChatRet)

        m_setQRable(false);

        m_setBarcode(false);

        char szData[2000] = {0};

        int nLen = 0;

        if(NULL != m_GetDecodeString)

            m_GetDecodeString(szData,nLen);

            if (nLen > 1 && nLen < 60)

                if((QDateTime::currentMSecsSinceEpoch() - m_tempmsChatTime)/1000 > 2)

                    m_tempmsChatTime = QDateTime::currentMSecsSinceEpoch();

//                    if(m_pDlgSignType->isVisible())

//                    {

//                        m_pDlgSignType->showStopReturn();

//                        Thread_Msg msg;

//                        msg.utype = 2; //1=签到码签到; 2=二维码签到

                    QString strData = QString::fromUtf8(szData);

//                        if(strData.contains(","))

//                          {

                            //10679e9f11,狗蛋,18888888888

//                            msg.msgtype = trdSaleswomanMsgType_phonecheckExist;

//                            strData = strData.right(11);

//                        }

//                        else

//                            msg.msgtype = trdSaleswomanMsgType_qrcodecheckExist;

//                        qstrcpy(msg.szParam1, strData.toUtf8().data());

//                        QString szTempPicPath;

//                        m_pDataFacer->GetTempPicPath(szTempPicPath);              ???

//                        qstrcpy(msg.szParam2, szTempPicPath.toUtf8().data()); //picPath

//                        m_pSaleswoman->PostThreadMsg(&msg);

//                        }

                   ////解析部分发回主程序，主程序解析

                   m_strBuffer=strData;

                   //区分一下是哪个设备发出的数据

                   ui->textBrowser->append("SDKDevice:");

                   emit readySendMessage();

                   qDebug() << "QR---QRcontent:"<<QString::fromUtf8(szData);

        if(NULL != m_setQRable)

            m_setQRable(true);

        if(NULL != m_setBarcode)

            m_setBarcode(true);

void Widget::com_slotGetData()

    if(State::ACTIVE!=state){

        m_pPort->readAll();     //clear buffer

    }else{

        m_strBuffer=m_pPort->readAll();

        //区分一下是哪个设备发出的数据

        ui->textBrowser->append("ComDevice:");

        emit readySendMessage();

//接收命令分析命令(暂不用)

void Widget::analyzeCommand()

    qDebug()<<"QR---receive CMD Data";

    //拆解命令

    QByteArray bArry, bOnce;

    int nNeeds= m_udpSocket.pendingDatagramSize();

    while (0 < nNeeds)

        bOnce.resize(nNeeds);

        QHostAddress sender;

        quint16 senderPort;

        m_udpSocket.readDatagram(bOnce.data(),bOnce.size(), &sender, &senderPort);

//        if(m_senderPort!=senderPort)

//            m_senderPort=senderPort;

        bArry += bOnce;

        bOnce.clear();

        nNeeds = m_udpSocket.pendingDatagramSize();

    //激活

    if(bArry==QByteArray("active")){

        if(state==State::ACTIVE)

            return;

        on_wakeUp_clicked();

    //睡

    else if(bArry==QByteArray("inactive")){

        if(state==State::INACTIVE)

            return;

        on_fallAsleep_clicked();

    //退出

    else if(bArry==QByteArray("quit")){

        qApp->quit();

void Widget::com_ScanUSBQRDevice()

    qDebug()<<"QR-----------------START SCAN USB-------------";

    CONST GUID *pClassGuid=NULL;

    LPCTSTR pszEnumerator=TEXT("USB");

    unsigned i;

    DWORD dwSize;

    DEVPROPTYPE ulPropertyType;

    CONFIGRET status;

    HDEVINFO hDevInfo;

    SP_DEVINFO_DATA DeviceInfoData;

    TCHAR szDeviceInstanceID [MAX_DEVICE_ID_LEN];

    WCHAR szBuffer[4096];

    FN_SetupDiGetDevicePropertyW fn_SetupDiGetDevicePropertyW = (FN_SetupDiGetDevicePropertyW)

        GetProcAddress (GetModuleHandle (TEXT("Setupapi.dll")), "SetupDiGetDevicePropertyW");

    // List all connected USB devices

    hDevInfo = SetupDiGetClassDevs (pClassGuid, pszEnumerator, NULL,

                                    pClassGuid != NULL ? DIGCF_PRESENT: DIGCF_ALLCLASSES | DIGCF_PRESENT);

    if (hDevInfo == INVALID_HANDLE_VALUE)

        return;

    // Find the ones that are driverless

    for (i = 0; ; i++)  {

        DeviceInfoData.cbSize = sizeof (DeviceInfoData);

        if (!SetupDiEnumDeviceInfo(hDevInfo, i, &DeviceInfoData))

            break;

        status = CM_Get_Device_ID(DeviceInfoData.DevInst, szDeviceInstanceID , MAX_PATH, 0);

        if (status != CR_SUCCESS)

            continue;

        // Display device instance ID

        qDebug()<<QString::fromWCharArray(szDeviceInstanceID);

        //BusReportedDeviceDesc总线返回设备信息---二维码扫描仪硬件标志

        if (fn_SetupDiGetDevicePropertyW && fn_SetupDiGetDevicePropertyW \

                (hDevInfo, &DeviceInfoData, &DEVPKEY_Device_BusReportedDeviceDesc,\

                 &ulPropertyType, (BYTE*)szBuffer, sizeof(szBuffer), &dwSize, 0)){

            QString busReport=QString::fromWCharArray(szBuffer);

            qDebug()<<busReport;

            if(busReport!=QRDEVICE)

                continue;

            //FriendlyName友好名称---找到串口号

            if (fn_SetupDiGetDevicePropertyW \

                    (hDevInfo, &DeviceInfoData, &DEVPKEY_Device_FriendlyName,\

                     &ulPropertyType, (BYTE*)szBuffer, sizeof(szBuffer), &dwSize, 0)){

                QString friendlyName=QString::fromWCharArray(szBuffer);

                QRegExp regexp("[()]");

                QString strResult = friendlyName.section(regexp, 1, 1);

                m_portName=strResult;

                comDevice=true;

                com_OpenCom();

                qDebug()<<strResult;

    qDebug()<<"QR-----------------END SCAN USB-------------";

    return;

void Widget::com_OpenCom()

     foreach (const QSerialPortInfo &info, QSerialPortInfo::availablePorts()){

         if(info.portName()==m_portName){

             m_pPort->setPort(info);

             qDebug("QR---The QRSerialportinfo Be Found !!!");

             break;

     if(!m_pPort->open(QIODevice::ReadWrite))

         return;

     m_pPort->setBaudRate(QSerialPort::Baud9600);

     m_pPort->setParity(QSerialPort::NoParity);

     m_pPort->setDataBits(QSerialPort::Data8);

     m_pPort->setStopBits(QSerialPort::OneStop);

     m_pPort->setFlowControl(QSerialPort::NoFlowControl);

void Widget::sdk_LoadDllAndScanSDKQRDevice()

    QDir dir;

    QString szLoadDll= QString("%0/dll_camera.dll").arg(dir.currentPath());

    m_ploadChat = new QLibrary(szLoadDll);

    if(m_ploadChat->load())

/*

             * void GetAppHandle(HWND hwnd)

             * hwnd:接收解码信息的窗口句柄

             * func:将接收解码信息的窗口句柄传给dll

*/

        m_getAppHld = (getAppHld)m_ploadChat->resolve("GetAppHandle");

/*

             * void setQRable(bool bqr)

             * bqr: true qr引擎开启；false qr引擎关闭

             * func:设置QR引擎状态

*/

        m_setQRable = (setQRable)m_ploadChat->resolve("setQRable");

/*

             * void setBarcode(bool bbarcode)

             * bbarcode: true 一维引擎开启；false 一维引擎关闭

             * func:设置一维引擎状态

*/

        m_setBarcode = (setBarcode)m_ploadChat->resolve("setBarcode");

/*

             * void SetBeepTime(int BeepTime)

             * BeepTime: 蜂鸣时间 单位：ms

             * func:设置解码成功后的蜂鸣时间

*/

        m_SetBeepTime = (SetBeepTime)m_ploadChat->resolve("SetBeepTime");

/*

             * int StartDevice()

             * func:启动设备

             * 返回值： 1 设备启动成功

             *         -1 设备启动

             *         -2 没有找到设备

             *         -3 设备初始化失败

*/

        m_StartDevice = (StartDevice)m_ploadChat->resolve("StartDevice");

/*

             * void SetBeep(bool bctrlBeep)

             * bctrlBeep: true:蜂鸣开启 false:蜂鸣关闭

             * func:设置蜂鸣器的开启关闭

*/

        m_SetBeep = (SetBeep)m_ploadChat->resolve("SetBeep");

/*

             * void m_SetLed(bool bctrlLed)

             * bctrlLed: true:开启 false:关闭

             * func:设置Led灯开启关闭

*/

        m_SetLed = (SetLed)m_ploadChat->resolve("SetLed");

/*

             * void GetDecodeString(char *aa, int &len)

             * aa:获取解码信息的指针

             * len:传出参数，获取解码信息的数据长度

             * func:获取解码信息

*/

        m_GetDecodeString = (GetDecodeString)m_ploadChat->resolve("GetDecodeString");

/*

             * void ReleaseDevice()

             * func:释放摄像头

*/

        m_ReleaseDevice = (ReleaseDevice)m_ploadChat->resolve("ReleaseDevice");

/*

             * void ReleaseLostDevice()

             * func:人为拔出设备时，需要释放的摄像头资源

*/

        m_ReleaseLostDevice = (ReleaseLostDevice)m_ploadChat->resolve("ReleaseLostDevice");

/*

             * int GetDevice()

             * func:查找设备

             * 返回值 1，表示查找设备成功

             *        -1，表示查找设备失败

*/

        m_GetDevice = (GetDevice)m_ploadChat->resolve("GetDevice");

//

        qDebug()<<QString("QR---LoadChatDLL() Success!");

        sdk_InitChatDvc();

    else

       qDebug()<<QString("QR---LoadChatDLL() Fail!=%1").arg(szLoadDll);

void Widget::sdk_InitChatDvc()

    WId hShow = this->winId();

    if(NULL != m_getAppHld)

        m_getAppHld((HWND)hShow);

    if(NULL != m_setQRable)

        m_setQRable(true);

    if(NULL != m_setBarcode)

        m_setBarcode(true);

    if(NULL != m_SetBeepTime)

        m_SetBeepTime(100);

    if(NULL != m_StartDevice)

        m_nChatRet = m_StartDevice();

    qDebug()<<"m_nChatRet:"<<m_nChatRet;

    if (1 == m_nChatRet)

//        if(NULL != m_setBarcode)

//            m_setBarcode(true);

//        if(NULL != m_SetBeepTime)

//            m_SetBeepTime(100);

        if(NULL != m_SetBeep)

            m_SetBeep(true);

        if(NULL != m_SetLed)

            m_SetLed(true);

        // 1 设备启动成功 -1 设备启动 -2 没有找到设备 -3 设备初始化失败

        qDebug()<<QString("QR---sdkDevice ready ok");

        sdkDevice=true;

    else if(-1 == m_nChatRet){

        qDebug()<<QString("QR---sdkDevice be starting");

    else if(-2 == m_nChatRet)

       qDebug()<<QString("QR---not find sdkDevice");

    else if(-3 == m_nChatRet)

        qDebug()<<QString("QR---sdkDevice init fail");

    else

        qDebug()<< QString("QR---sdkDevice find error,please check");

void Widget::sdk_ReleaseDll()

    int nDvcs = 0;

    if(NULL != m_GetDevice)

        nDvcs = m_GetDevice();

    if(-1 == nDvcs)

        m_nChatRet = 0;

    qDebug()<<"m_GetDevice"<<"nDvcs"<<nDvcs<<"m_nChatRet"<<m_nChatRet;

    if(1 == m_nChatRet )

        if(NULL != m_setQRable)

            m_setQRable(false);

        if(NULL != m_setBarcode)

            m_setBarcode(false);

        if(NULL != m_ReleaseDevice)

            m_ReleaseDevice();

Qt 二维码扫描仪（SDK+串口)

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