number of event filter calls

[IknowQT]

I checked the number of calls to debug in the event filter, but it came in twice. Why is it called twice?

bool usrCntrListWidget::eventFilter(QObject* dest, QEvent* event)
{
	if (event->type() == QEvent::TouchBegin)
	{
        QTouchEvent* e = static_cast<QTouchEvent*>(event);
        if (e)
        {
            if (e->touchPointStates() == Qt::TouchPointPressed)
            {
                m_bClicked = true;
            }
            else if (e->touchPointStates() == Qt::TouchPointReleased)
            {
                m_bClicked = false;
            }

            qDebug() << "eventFilter" + m_bClicked;
        }
	}

    else if (event->type() == QEvent::MouseButtonPress)
    {
        QMouseEvent* e = static_cast<QMouseEvent*>(event);
        if (e->button() & Qt::LeftButton)
        {
            //if(!m_bVisibleCheckBox)
            //    QTimer::singleShot(1000, this, SLOT(GetLastTime()));
			m_bClicked = true;
          
            //m_tPushTime->start(1000);

			qDebug() << QString("MouseButtonPress : %1").arg(m_bClicked);
		}
	}

    else if (event->type() == QEvent::MouseButtonRelease)
    {
        QMouseEvent* e = static_cast<QMouseEvent*>(event);
        if (e->button() & Qt::LeftButton)
		{
			m_bClicked = false;
			qDebug() << QString("MouseButtonRelease : %1");
		}
	}

    else if (event->type() == QEvent::MouseButtonDblClick)
    {
        QMouseEvent* e = static_cast<QMouseEvent*>(event);
        if (e->button() & Qt::LeftButton)
        {
            m_bClicked = false;

            if (m_bVisibleCheckBox)
                VisibleCheckBox(false);
            
            qDebug() << QString("MouseButtonDblClick : %1");
        }
    }

	return false;
}

[SGaist]

Hi,

Did you install an event filter ?
On which object ?
You should also print the object that is passed in parameter.

[IknowQT]

@SGaist

I changed the event filter to mouse event and it worked as I wanted.

class usrCntrListWidget : public QListWidget
{
	Q_OBJECT

private:
	bool		m_bClicked;
	bool		m_bVisibleCheckBox;
	int			m_nCount;
	QTimer*		m_pTimer;

public:
	usrCntrListWidget(QWidget *parent);
	~usrCntrListWidget();
	void	VisibleCheckBox(bool bShow);

public slots:
	void	GetLastTime();
	void	VisibleCheckBox(QListWidgetItem* item);

protected:
	void    mousePressEvent(QMouseEvent* event) override;
	void    mouseReleaseEvent(QMouseEvent* event) override;
	void    mouseDoubleClickEvent(QMouseEvent* event) override;
};


------------------------------- cpp -------------------------------
void usrCntrListWidget::mousePressEvent(QMouseEvent* event)
{
	if (event->button() & Qt::LeftButton)
	{
        qDebug() << "mousePressEvent";
        m_pTimer->start(1000);
    }
}

void usrCntrListWidget::mouseReleaseEvent(QMouseEvent* event)
{
    if (event->button() & Qt::LeftButton)
    {
        qDebug() << "mouseReleaseEvent";

		if (m_pTimer->isActive())
            m_pTimer->stop();
    }
}

usrCntrListWidget::usrCntrListWidget(QWidget *parent)
	:   m_bClicked(false),
        m_nCount(0),
        m_bVisibleCheckBox(false),
        m_pTimer(new QTimer(this))
{
	this->setMouseTracking(true);
	this->viewport()->installEventFilter(this);
    this->connect(this->m_pTimer, SIGNAL(timeout()), this, SLOT(GetLastTime()));
    this->connect(this, SIGNAL(itemClicked(QListWidgetItem*)), this, SLOT(VisibleCheckBox(QListWidgetItem*)));
}

void usrCntrListWidget::VisibleCheckBox(QListWidgetItem* item) 
{
    qDebug() << "VisibleCheckBox";

	usrCntrListItem* pItem = qobject_cast<usrCntrListItem*>(this->itemWidget(item));
    pItem->SetCheckVisible(!pItem->GetCheckStatus());
}

void usrCntrListWidget::mouseDoubleClickEvent(QMouseEvent* event)
{
    if (event->button() & Qt::LeftButton)
    {
        qDebug() << "mouseDoubleClickEvent";

        if(m_bVisibleCheckBox)
            VisibleCheckBox(false);
    }
}

But can you check if my method is correct?
Others say they didn't call the base class, I don't know what the problem is

[jsulm]

@IknowQT In this thread https://forum.qt.io/topic/132824/how-to-use-mouse-events-and-signals-together I gave you a link which explains how to implement event handlers. Did you read it?