在C++中显示Qt图形用户界面时，在后台接受套接字连接

#include <QApplication>
#include <QWidget>
#include <QPushButton>
#include <QTcpServer>
#include <QTcpSocket>

class MainWindow : public QWidget
{
    Q_OBJECT

public:
    MainWindow(QWidget *parent = nullptr) : QWidget(parent)
    {
        // 创建一个按钮
        QPushButton *button = new QPushButton("Click me", this);
        connect(button, &QPushButton::clicked, this, &MainWindow::handleButtonClicked);

        // 创建套接字服务器
        server = new QTcpServer(this);
        connect(server, &QTcpServer::newConnection, this, &MainWindow::handleNewConnection);
        server->listen(QHostAddress::Any, 1234); // 监听任意地址和端口1234
    }

private slots:
    void handleButtonClicked()
    {
        // 处理按钮点击事件
        // 发送数据到客户端
        if (socket && socket->state() == QAbstractSocket::ConnectedState)
        {
            socket->write("Hello from server");
        }
    }

    void handleNewConnection()
    {
        // 处理新的连接请求
        socket = server->nextPendingConnection();
        connect(socket, &QTcpSocket::readyRead, this, &MainWindow::handleReadyRead);
    }

    void handleReadyRead()
    {
        // 处理套接字数据的接收和处理
        QByteArray data = socket->readAll();

        // 在这里根据接收到的数据做相应的处理

        // 更新界面显示
        // ...
    }

private:
    QTcpServer *server;
    QTcpSocket *socket;
};

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    MainWindow window;
    window.show();

    return app.exec();
}

#include "main.moc"