天天向上

#ifndef SHOWNUMBER_H

#define SHOWNUMBER_H

#include <QMainWindow>

#include <QThread>

#include <mainwindow.h>

class ShowNumber:public QThread

{

    Q_OBJECT

public:

    ShowNumber(MainWindow *gui);

    ~ShowNumber();

    // to override run method

    void run();

    // is the job running

    bool running;

    int counter;

       // in order to notify subscribers (mainwindow)

   signals:

       void signalUpdateUI();

       // callback function

   public slots:

       void slotUpdateUI();

   public:

       MainWindow *m_gui;

};

#endif // SHOWNUMBER_H

#include "shownumber.h"

ShowNumber::ShowNumber(MainWindow *gui)

{

    running =true;

    this->m_gui = gui;

    connect(this, SIGNAL(showNum()), this, SLOT(slotUpdateUI()));

}

ShowNumber::~ShowNumber()

{

}

void ShowNumber::run()

{

    while(running)

    {

        counter++;

        emit signalUpdateUI();

        msleep(1);

    }

}

void ShowNumber::slotUpdateUI()

{

    m_gui->shownumberDisp();

}

#ifndef MAINWINDOW_H

#define MAINWINDOW_H

#include <QMainWindow>

QT_BEGIN_NAMESPACE

namespace Ui { class MainWindow; }

QT_END_NAMESPACE

class MainWindow : public QMainWindow

{

    Q_OBJECT

public:

    MainWindow(QWidget *parent = nullptr);

    ~MainWindow();

private:

    Ui::MainWindow *ui;

public:

    void shownumberDisp();

public slots:

    void shownumberStart();

    void shownumberStop();

private slots:

    void on_pushButton_clicked();

    void on_pushButton_2_clicked();

};

#endif // MAINWINDOW_H

#include "shownumber.h"

ShowNumber::ShowNumber(MainWindow *gui)

{

    running =true;

    this->m_gui = gui;

    connect(this, SIGNAL(signalUpdateUI()), this, SLOT(slotUpdateUI()));

}

ShowNumber::~ShowNumber()

{

}

void ShowNumber::run()

{

    while(running)

    {

        counter++;

        emit signalUpdateUI();

        msleep(1);

    }

}

void ShowNumber::slotUpdateUI()

{

    m_gui->shownumberDisp();

}