Qt 实现QLabel的单击双击功能（三）

问题2无论是点击左键，右键还是中键，都可触发信号且没有区分。
这个比较简单，就是实现左键单击，左键双击，右键单击功能。直接上代码

QXHLabel::QXHLabel(QWidget *parent)
    :QLabel(parent)
{
    m_timer = new QTimer(this);
    connect(m_timer, SIGNAL(timeout()), this, SLOT(onTimeout()));

    m_isLPressed = false;
}
void QXHLabel::mousePressEvent(QMouseEvent *event)
{
    if (event->button() == Qt::LeftButton)
    {
        m_isLPressed = true;
    }

}
void QXHLabel::mouseReleaseEvent(QMouseEvent *event)
{
    if (event->button() == Qt::LeftButton)
    {
        if (m_isLPressed)
        {
           m_timer->start(180);
        }

        m_isLPressed = false;
    }
    else if (event->button() == Qt::RightButton)
    {
        emit RClicked();
    }
}
void QXHLabel::mouseDoubleClickEvent(QMouseEvent *event)
{
    if (event->button() == Qt::LeftButton)
    {
        m_timer->stop();
        emit doubleClicked();
    }
}
void QXHLabel::onTimeout()
{
    m_timer->stop();
    emit LClicked();
}