feat: 添加指令回显功能

.vscode/settings.json

@@ -4,6 +4,9 @@
         "ostream": "cpp",
         "iostream": "cpp",
         "qmainwindow": "cpp",
-        "new": "cpp"
+        "new": "cpp",
+        "qtcpsocket": "cpp",
+        "*.tcc": "cpp",
+        "string": "cpp"
     }
 }

mainwindow.cpp

@@ -28,6 +28,7 @@ void MainWindow::start_connet()
         tcp_socket = new QTcpSocket(this);
         tcp_socket->connectToHost(ui->le_server_ip->text(), ui->le_port->text().toInt());
         connect(tcp_socket, &QTcpSocket::connected, this, &MainWindow::connected);
+        connect(tcp_socket, &QTcpSocket::readyRead, this, &MainWindow::receive_cmd);
     }
 }
 void MainWindow::connected(){
@@ -51,7 +52,15 @@ void MainWindow::send_cmd(){
 
     if (tcp_socket != nullptr)
     {
+        ui->tb_msgbox->append("[S]" + ui->le_cmd->text());
         QByteArray data = ui->le_cmd->text().toUtf8();
         tcp_socket->write(data);
     }
-}
+}
+void MainWindow::receive_cmd()
+{
+    QByteArray data = tcp_socket->readAll();
+    QString str = data.data();
+    str="[R]" + str;
+    ui->tb_msgbox->append(str);
+}   

mainwindow.h

@@ -22,6 +22,7 @@ public slots:
     void stop_connet();
     void connected();
     void send_cmd();
+    void receive_cmd();
 private:
     Ui::MainWindow *ui;
     QTcpSocket *tcp_socket;

mainwindow.ui

@@ -28,7 +28,7 @@
       </property>
       <layout class="QVBoxLayout" name="verticalLayout_2">
        <item>
-        <widget class="QTextBrowser" name="textBrowser"/>
+        <widget class="QTextBrowser" name="tb_msgbox"/>
        </item>
        <item>
         <widget class="QGroupBox" name="groupBox_3">