Qt实现搜索LAN设备

来源：互联网发布：edg那个知恩是谁编辑：程序博客网时间：2024/06/02 01:09

代码上：

Work.cpp

#include <QApplication>#include <QTableWidget>#include <QTableWidgetItem>#include <QVBoxLayout>#include "Work.h"#include "P2PSearchProtocol.h"#include <QTextStream>MyQPushButton *pQPushButton;int main(int argc, char *argv[]){    QApplication a(argc, argv);    QWidget *pQWidget = new QWidget;    pQWidget->setWindowTitle("LAN Devices");    pQWidget->resize(450, 200);         pQPushButton = new MyQPushButton();    pQPushButton->setText("Search");    QObject::connect( pQPushButton,SIGNAL(clicked()),pQPushButton,SLOT(HandleButton()) );        QTableWidget *pQTableWidget = new QTableWidget;    pQTableWidget->setColumnCount(3);     pQTableWidget->setRowCount(10);    pQTableWidget->resize(400, 200);     QStringList header;    header<<"ID"<<"Name"<<"IP";    pQTableWidget->setHorizontalHeaderLabels(header);        //pQTableWidget->setItem(0,0,new QTableWidgetItem("Jan"));    //pQTableWidget->setItem(1,0,new QTableWidgetItem("Feb"));    //pQTableWidget->setItem(2,0,new QTableWidgetItem("Mar"));    QVBoxLayout *pQVBoxLayout = new QVBoxLayout;    pQVBoxLayout->addWidget(pQPushButton);    pQVBoxLayout->addWidget(pQTableWidget);        pQPushButton->m_pQTableWidget=pQTableWidget;    pQPushButton->m_pQWidget=pQWidget;        pQWidget->setLayout(pQVBoxLayout);    pQWidget->show();        return a.exec();}

Work.h

#include <QPushButton>#include <QMessageBox> #include <string>#include <SSTREAM>#include <process.h>#include <QDebug>#include <QFile>#include <QTextStream>#include <QtNetwork>#include <QtNetwork/qudpsocket.h>#include <QtNetwork/qhostaddress.h>#include <QTableWidget>#include <QTableWidgetItem>#include <QWidget>#include <vector>#include "P2PSearchProtocol.h"typedef unsigned int (__stdcall *FuncThread)(void *);class MyQPushButton:public QPushButton{Q_OBJECT public:    std::vector<PSEARCH_RESP*>        m_vtRelt;    QTableWidget*                     m_pQTableWidget;    QWidget*                        m_pQWidget;    QString                            m_qstrIP;    public slots:        void HandleButton()        {            //QMessageBox::about( 0, "Invoke Starting", "Invoke Starting...");             unsigned ulThreadId;            void * hThreadProc=                (void *)_beginthreadex(NULL,0,(FuncThread)ThreadProc,this,0,&ulThreadId);            if(NULL==hThreadProc)            {                QMessageBox::about( 0, "Thread Failed", "Creating the thread failed!");                 return;            }            QUdpSocket* pQUdpSocket=new QUdpSocket();                        QHostAddress* host=new QHostAddress("192.168.0.114");            //pQUdpSocket->bind(*host,BROADCAST_SEND_PORT_L);            QList<QHostAddress> list = QNetworkInterface::allAddresses();            for(int nIter=0; nIter<list.count(); nIter++)            {              //if(!list[nIter].isLoopback())               if (list[nIter].protocol() == QAbstractSocket::IPv4Protocol )               {                  m_qstrIP=list[nIter].toString();                  m_pQWidget->setWindowTitle( "LAN Devices   ---   Your IP : "+ m_qstrIP );                  host=new QHostAddress( m_qstrIP );                  //QMessageBox::about( 0, "Your IP", m_qstrIP );                   pQUdpSocket->bind(*host,BROADCAST_SEND_PORT_L);                  break;               }            }            pQUdpSocket->bind(QHostAddress::LocalHost, BROADCAST_SEND_PORT_L);                        SEARCH_REQ req={STARTCODE,CMD_GET};            QByteArray datagram = (char*)&req;//"Broadcast message : Hello" + QByteArray::number(123);            pQUdpSocket->writeDatagram(datagram.data(), datagram.size(),                             QHostAddress::Broadcast, BROADCAST_SEND_PORT_L);                    QMessageBox::about( 0, "Send The Data", QString( "Sending Over" ) );             int index=0;            while(pQUdpSocket->hasPendingDatagrams())            {                 QByteArray datagramRecv;                 datagramRecv.resize(pQUdpSocket->pendingDatagramSize());                 QHostAddress sender;                 quint16 senderPort;                 pQUdpSocket->readDatagram(datagramRecv.data(), datagramRecv.size(),                                         &sender, &senderPort);                                                         int row_count=m_pQTableWidget->rowCount();                if(row_count<index+1)     m_pQTableWidget->setRowCount(row_count+10);                                PSEARCH_RESP ptr=(PSEARCH_RESP)datagramRecv.data();                if(    sender.toString()==QString(m_qstrIP)    )                {                    //QMessageBox::about( 0, "Sender", QString::number( strlen(ptr->dwDeviceID) ) );                     continue;                }                m_pQTableWidget->setItem(index,2,new QTableWidgetItem( sender.toString() ));                m_pQTableWidget->setItem(index,1,new QTableWidgetItem( QString('L') ));                m_pQTableWidget->setItem(index,0,new QTableWidgetItem( QString(QLatin1String( ptr->dwDeviceID )) ));                index++;            }             QMessageBox::about( 0, "Receive The Data", QString( "Receiving Over" ) );                     }            private:        static unsigned long __stdcall ThreadProc(void* pParam)        {        /*            MyQPushButton* pMyQPushButton=(MyQPushButton*)pParam;                    QUdpSocket* pQUdpSocket=new QUdpSocket();            QHostAddress* host=new QHostAddress("192.168.0.114");            //pQUdpSocket->bind(QHostAddress::LocalHost, 7756);            pQUdpSocket->bind(*host,BROADCAST_SEND_PORT_L);            SEARCH_REQ req={STARTCODE,CMD_GET};            QByteArray datagram = (char*)&req;//"Broadcast message : Hello" + QByteArray::number(123);            pQUdpSocket->writeDatagram(datagram.data(), datagram.size(),                             QHostAddress::Broadcast, BROADCAST_SEND_PORT_L);                    for(int i=0;i<5000;i++);            int index=0;            while(pQUdpSocket->hasPendingDatagrams())            {                 QByteArray datagramRecv;                 datagramRecv.resize(pQUdpSocket->pendingDatagramSize());                 QHostAddress sender;                 quint16 senderPort;                 pQUdpSocket->readDatagram(datagramRecv.data(), datagramRecv.size(),                                         &sender, &senderPort);                                                         int row_count=pMyQPushButton->m_pQTableWidget->rowCount();                if(row_count<index+1)     pMyQPushButton->m_pQTableWidget->setRowCount(row_count+10);                                PSEARCH_RESP ptr=(PSEARCH_RESP)datagramRecv.data();                if(    sender.toString()==QString("192.168.0.114")    )                {                    //QMessageBox::about( 0, "Sender", QString::number( strlen(ptr->dwDeviceID) ) );                     continue;                }                pMyQPushButton->m_pQTableWidget->setItem(index,2,new QTableWidgetItem( sender.toString() ));                pMyQPushButton->m_pQTableWidget->setItem(index,1,new QTableWidgetItem( QString('L') ));                pMyQPushButton->m_pQTableWidget->setItem(index,0,new QTableWidgetItem( QString(QLatin1String( ptr->dwDeviceID )) ));                index++;            }             */            return 0;        }        };

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