How to calculate number of mouse clicks in widget?

yuvaram

I have tried with a sample, but deterministic behavior is observed.

widget::widget(QWidget *parent) : QWidget(parent)
{
m_numMouseClicks = 0;
this->setFixedSize(600,400);
m_vBlyt = new QVBoxLayout(this);
m_lBtest = new QLabel("MOUSE CLICK TEST");
m_pBgetClicks = new QPushButton("GetClicks");
m_vBlyt->addWidget(m_lBtest);
m_vBlyt->addWidget(m_pBgetClicks);
connect(m_pBgetClicks,SIGNAL(clicked(bool)),this,SLOT(printNumofClicks()));
}

bool widget::eventFilter(QObject *watched, QEvent *event)
{
if(event->type() == QEvent::MouseButtonPress){
m_numMouseClicks++;
return false;
}else{
// standard event processing
return QObject::eventFilter(watched, event);
}
}

void widget::printNumofClicks()
{
qDebug()<<Q_FUNC_INFO<<"# num of clicks :"<<m_numMouseClicks<<endl;
}

int main(int argc, char *argv[])
{
QApplication a(argc, argv);
widget *wobj = new widget;
a.installEventFilter(wobj);
wobj->show();

return a.exec();

}

output: number of clicks are not in sync

Fuel

Just reimplement this Method http://doc.qt.io/qt-4.8/qwidget.html#mousePressEvent

And everytime count the click. Its a protected Method from QWidget.

yuvaram

@Fuel
Thank you @Fuel MousePressEvent is working, but i have doubt, why eventFilter logic is giving different output? Can you explain ?

yuvaram

@Fuel
I want to calculate number of mouse clicks in complete application, by using mousePressEvent it gives number of clicks only in widget. widget has Qpushbutton, on button click : mousePressEvent of widget is not called.

Fuel

Dont know if there is a all in one Solution. Maybe you have to count every Event by itself. So you need to count the Events from pressing the QPushButton and shared it with your Application.

yuvaram

Hi,
Thank you.
Solved by @dheerendra
bool widget::eventFilter(QObject *watched, QEvent *event)
{
if(event->type() == QEvent::MouseButtonPress){
QMouseEvent mE = dynamic_cast<QMouseEvent>(event);
if (m_timeStamp!=mE->timestamp()){
m_timeStamp=mE->timestamp();
m_numMouseClicks++;
}
qDebug() << " Object ="<< watched->objectName() << " Time =" << mE->timestamp() << endl;
qDebug()<<Q_FUNC_INFO<<m_numMouseClicks<<"#class Name :"<<watched->metaObject()->className()<<endl;
this->printNumofClicks();
}
return QObject::eventFilter(watched, event);
}