#ifndef CIRCLAWIDGET_H

#define CIRCLAWIDGET_H

#include <QFrame>

#include<QTimer>

class CircleWidget:public QFrame

{

    Q_OBJECT

public:

    CircleWidget(QWidget *parent);

    ~CircleWidget();

private:

    void paintEvent(QPaintEvent *event);

    void timerEvent(QTimerEvent *event);

private:

    int m_timerId;

    int m_times;

};

#endif // CIRCLAWIDGET_H

# include"circlewidget.h"

#include<QPainter>

CircleWidget::CircleWidget(QWidget *parent):QFrame(parent)

{

    m_timerId=startTimer();

    m_times=;

}

CircleWidget::~CircleWidget()

{

}

void CircleWidget::paintEvent(QPaintEvent *event)

{

        QPainter painter(this);

        int width=this->width();

        int height=this->height();

        painter.setPen(Qt::NoPen);

        if(m_times==)

        {

         QBrush brush(QColor(0xFF,0xFF,0xFF));

         painter.setBrush(brush);

         m_times=;

        }

        else

        {

            QBrush brush(QColor(0x88,0x00,0xFF));

            painter.setBrush(brush);

           m_times=;

        }

        m_times++;

        if(m_times==)

        {

        m_times=;

        }

         painter.drawEllipse(,,,);

}

void CircleWidget::timerEvent(QTimerEvent *event)

{

        update();

}