void init()

{

　　m_nClickCount = 0;

　　m_timer = new QTimer(this);

　　connect(m_timer, SIGNAL(timeout()), this, SLOT(onKeyOneClick()));

}

void mouseReleaseEvent(QMouseEvent*)

{

    if (!m_timer->isActive()) //计数期间，则不重新开始

    {

               m_timer->start();//300ms是判断双击的时间间隔，不唯一，可根据实际情况改变

     }

    m_nClickCount += ;
　　//300ms 内，两次单击则触发双击效果 ，然后停止计数

    if(m_nClickCount == )

    {

        emit sigClose();

        m_nClickCount = ;

        m_timer->stop();

    }

}

void onKeyOneClick()

{

    m_timer->stop();

    m_nClickCount = ;

}

void MainWindow::mouseReleaseEvent(QMouseEvent *)

{

    static int num = ;

    static double time_Start =  ;

    static double time_End =  ;

    num+=;

    if(num == ){

        time_Start = (double)clock();

        qDebug()<< "num == 1";

        if((time_Start - time_End) < ){//连续快速两次单击

            //

            qDebug()<< "click quickly " << time_Start - time_End ;

        }

    }

    if(num == ){

        num = ;

        qDebug()<< "num == 2";

        time_End = (double)clock();

        if((time_End - time_Start) < ){//连续快速两次单击

            //

            qDebug()<< "click quickly " << time_End - time_Start ;

        }

    }

}

void MainWindow::mouseReleaseEvent(QMouseEvent *)

{

    static int num = ;

    static  struct timeval tpstart,tpend;

    float timeuse;

    num+=;

    if(num == ){

         gettimeofday(&tpstart,NULL);

//        timeuse=(1000000*(tpend.tv_sec-tpstart.tv_sec) + tpend.tv_usec-tpstart.tv_usec)/1000.0;

//        qDebug()<< "num == 1 " << timeuse ;

//        if(timeuse< 400){//连续快速两次单击

//            //

//            qDebug()<< "click quickly "  ;

//        }

    }

    if(num == ){

        num = ;

        gettimeofday(&tpend,NULL);

        timeuse=(*(tpend.tv_sec-tpstart.tv_sec) + tpend.tv_usec-tpstart.tv_usec)/1000.0;

        qDebug()<< "num == 2 "  << timeuse;

        if(timeuse < ){//连续快速两次单击

            //

            qDebug()<< "click quickly " ;

        }

    }

}