在Windows下，利用QT编程中点击按钮void MainWindow：：on_Delay_test_pushButton_clicked（），对局域网内目标IP设备进行ping测试，并将ping测试的时间延迟显示在 ui->wire_log_2，修改后的完整代码

在Windows环境下，使用Qt进行编程并实现在点击按钮后对局域网内的目标IP设备进行ping测试，并在`ui->wire_log_2`文本框中展示ping时间的延迟，你需要在`MainWindow`类中添加相应的槽函数和网络操作。以下是一个简单的示例代码：

#include <QTimer>
#include <QPushButton>
#include <QObject>
#include <QLabel>
#include <QTextEdit>
#include <qglobal.h>

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = nullptr)
        : QMainWindow(parent)
    {
        // 创建一个按钮
        QPushButton* delay_test_pushButton = new QPushButton("Ping Test", this);
        connect(delay_test_pushButton, &QPushButton::clicked, this, &MainWindow::on_Delay_test_pushButton_clicked);

        // 创建一个文本编辑框用于显示ping结果
        QLabel* wire_log_label = new QLabel("Ping Time (ms):", this);
        ui->wire_log_2 = new QTextEdit(this); // 假设ui->wire_log_2已经存在并且连接到了UI设计中的控件

        QVBoxLayout* layout = new QVBoxLayout();
        layout->addWidget(wire_log_label);
        layout->addWidget(ui->wire_log_2);
        setLayout(layout);
    }

private slots:
    void on_Delay_test_pushButton_clicked()
    {
        QString targetIp = "192.168.1.1"; // 替换为你需要ping的目标IP地址
        qint64 pingTimeMS = ping(targetIp);
        if (pingTimeMS > 0) {
            ui->wire_log_2->append(QString("Ping to %1 took %2 ms").arg(targetIp).arg(pingTimeMS));
        } else {
            ui->wire_log_2->append("Failed to ping the device.");
        }
    }

private:
    qint64 ping(const QString& ipAddress)
    {
        struct sockaddr_in addr;
        memset(&addr, 0, sizeof(addr));
        addr.sin_family = AF_INET;
        addr.sin_addr.s_addr = inet_addr(ipAddress.toUtf8().constData());
        addr.sin_port = htons(80); // 假定对方监听的是HTTP端口，如果实际不是，请替换

        // 使用Winsock API进行ping
        HANDLE hSocket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
        if (hSocket == INVALID_SOCKET)
        {
            qWarning() << "Error creating socket";
            return -1;
        }

        unsigned int timeout = 500; // 设置超时时间为500毫秒
        DWORD sendBytes = 0, bytesReceived = 0;
        OVERLAPPED overlapped;
        ZeroMemory(&overlapped, sizeof(overlapped));

        int result = WSAIoctl(hSocket,
                              SIOCTL_SENDTO,  // 请求发送数据到指定地址
                              (LPVOID)&addr,   // 地址指针
                              sizeof(addr),
                              NULL,           // 不发送数据
                              0,              // 发送的数据长度为0
                              &sendBytes,      // 发送字节数
                              &overlapped,     // 超时信息
                              &timeout);

        if (result != 0 || WSAGetLastError() != WSAEWOULDBLOCK)
        {
            closesocket(hSocket);
            qWarning() << "Error sending packet: " << result << ", error code: " << WSAGetLastError();
            return -1;
        }

        result = recvfrom(hSocket, NULL, 0, 0, (SOCKADDR*)&addr, &bytesReceived);
        if (result == SOCKET_ERROR)
        {
            closesocket(hSocket);
            qWarning() << "Error receiving response: " << WSAGetLastError();
            return -1;
        }

        closesocket(hSocket);

        if (WSAGetLastError() != WSAEWOULDBLOCK)
        {
            return -1;
        }

        // 计算往返时间
        qint64 elapsedTime = qint64(timeout * 1000);
        qint64 latency = elapsedTime / 2;

        return latency;
    }
};

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    MainWindow mainWindow;
    mainWindow.show();
    return app.exec();
}

请注意，上述代码使用了Winsock API来进行网络通信，Windows平台特有的API。在跨平台应用中，可能需要使用更通用的库，如Boost.Asio。