class TcpServer : public QThread
{
public:
    TcpServer(QGroupBox *groupBox, QObject* parent = 0);
    ~TcpServer();
    void getFilePath();
    void getFileName();
    void initSendFileGroup();
    void run();
public slots:
    void sendFile();
    void freshBtn();
    connect(tcpServer, SIGNAL(newConnection()), this, SLOT(freshBtn()));
    connect(sendBtn, SIGNAL(clicked()), this, SLOT(sendFile()));
Object::connect: No such slot QThread::freshBtn()
Object::connect: No such slot QThread::sendFile()