Qt 网口读写：QTcpSocket

在.pro文件中添加一句：

QT += network

 网口的读写操作：

        #include 

        QTcpSocket socket;
	socket.connectToHost("192.168.1.88", 1000);
	socket.waitForConnected(5000);
	
	if (socket.state() == QTcpSocket::ConnectedState) {
		
		QByteArray buf；
		socket.write(buf);
		socket.waitForBytesWritten(1000);

                socket.waitForReadyRead(1000);
	        QByteArray  pre = socket.readAll();

	}