moveToThread to qml

Jleon

I expected to get the text "1" from the thread to the UI.
My code is the following using moveToThread.
However I get nothing. What did I miss?

//tcpmodel.cc
#include "tcpmodel.h"
#include <QObject>

TcpModel::TcpModel(QObject* parent)
{
}

void TcpModel::tcpWork()
{   
    while(1)
    {
        msg="1";
        emit dataRecved(msg); 
    }

}

void TcpModel::tcpClose()
{
    m_socket->close();
    delete m_socket;
}


TcpMoveToThread::TcpMoveToThread(QObject* parent)
{
    m_tcp.moveToThread(&m_thread); 

    connect(&m_thread,&QThread::started,&m_tcp,&TcpModel::tcpWork); /
    connect(&m_tcp,&TcpModel::dataRecved,this,&TcpMoveToThread::dataChangedSlot);
    connect(&m_thread,&QThread::finished,&m_tcp,&TcpModel::tcpClose); /
    m_thread.start(); 
}

TcpMoveToThread::~TcpMoveToThread()
{
    m_thread.exit();
    m_thread.wait();
}

void TcpMoveToThread::dataChangedSlot(QString msg)
{
    m_data=msg;
    emit dataChanged();
}

//tcpmodel.h
#ifndef TCPMODEL_H
#define TCPMODEL_H
#include <QTcpSocket>
#include <QThread>

class TcpModel:public QObject  //实现TCP功能的类
{
    Q_OBJECT
public:
    TcpModel(QObject* parent=nullptr);


signals:
    void dataRecved(QString data);  
public slots:
    void tcpWork();
    void tcpClose();

private:
    QTcpSocket* m_socket;
    QString msg;
};

class TcpMoveToThread: public QObject
{
    Q_OBJECT
    Q_PROPERTY(QString m_data MEMBER m_data)
public:
    TcpMoveToThread(QObject* parent=nullptr);
    ~TcpMoveToThread();

signals:
    void dataChanged();   


public slots:
    void dataChangedSlot(QString msg);

private:
    QThread m_thread;  
    TcpModel m_tcp;  
    QString m_data;
};

#endif // TCPMODEL_H

//gpsindiactor.qml
QGCLabel {
        id:                 gpsText
        text:               qsTr("text")
        color:              qgcPal.text
        anchors.verticalCenter: gpsIcon.verticalCenter
        anchors.left:       gpsIcon.right
        anchors.leftMargin: ScreenTools.defaultFontPixelWidth
    }

    Connections{
             target: tcp
             onDataChanged:{
                 gpsText.text=tcp.m_data;
             }
         }

    TcpMoveToThread{
         id: tcp
     }