QtExamples/QtTcpEx/ExTcpClient/ExTcpClient.h

#ifndef EXTCPCLIENT_H
#define EXTCPCLIENT_H

#include <QMainWindow>
#include <QLabel>
#include <QTcpSocket>
#include <QHostInfo>

namespace Ui {
class ExTcpClient;
}

class ExTcpClient : public QMainWindow
{
    Q_OBJECT

public:
    explicit ExTcpClient(QWidget *parent = nullptr);
    ~ExTcpClient();

private:
    QString getLocalIp();                  //获取本本机 IP

protected:
    void closeEvent(QCloseEvent *event);

private slots:
    //UI 定义的槽函数
    void on_actConnect_triggered();     //请求连接到服务器
    void on_actDisconnect_triggered();  //断开与服务器的连接
    void on_actClear_triggered();       //清除内容
    void on_actQuit_triggered();        //退出程序
    void on_btnSend_clicked();          //发送文本消息

    //自定义的槽函数
    void onConnected();
    void onDisconnected();
    void onSocketReadyRead();           //从socket读取传入的数据
    void onSocketStateChange(QAbstractSocket::SocketState socketState);

private:
    Ui::ExTcpClient *ui;

    QLabel* m_labSocket;
    QTcpSocket* m_tcpSocket;
};

#endif // EXTCPCLIENT_H