mouseEvent->pos().x() always return 0. mouseEvent->pos().y() updating on mouse move

sujith D


bool Module3::eventFilter(QObject *obj, QEvent *event) { 

       QMouseEvent *mouseEvent = static_cast(event);
     
      if(obj ==scene && event->type() == QEvent::GraphicsSceneMouseMove){
  
        QToolTip::showText(mouseEvent->pos(),QString::number(
               mouseEvent->pos().x()) + ", " + QString::number( 
               mouseEvent->pos().y()));
      }

       return false;
}```

Christian Ehrlicher

Since you check for GraphicsSceneMouseMove I would guess it's a QGraphicsSceneMouseEvent, not a QMouseEvent.

sujith D

updated code qInfo() working but QToolTip shows eroor error: no matching function for call to ‘QToolTip::showText(QPointF, const QString).

bool Module3::eventFilter(QObject *obj, QEvent *event)
{
 

    if (obj == scene && event->type() == QEvent::GraphicsSceneMouseMove) {
    
         if (auto *mouseEvent = dynamic_cast<QGraphicsSceneMouseEvent*>(event)) {
          qInfo()<<"x"<<mouseEvent->scenePos().x()<<"y"
            <<mouseEvent->scenePos().y();

                   QToolTip::showText(mouseEvent->scenePos(),
                        QString::number(
                        mouseEvent->scenePos().x()) +
                     ", "  + QString::number( 
                       mouseEvent->scenePos().y())); 


        }
     }
  }

Christian Ehrlicher

Because, as the compiler complains - QToolTip::showText() needs a QPoint instead a QPointF - so you have to convert it.

sujith D

This code works

bool Module3::eventFilter(QObject *obj, QEvent *event)
{
 
    if (obj == scene && event->type() == QEvent::GraphicsSceneMouseMove) {
            if (auto *mouseEvent = 
                       dynamic_cast<QGraphicsSceneMouseEvent *>(event)) {
                       QToolTip::showText(
                       mouseEvent->scenePos().toPoint(),QString::number(
                       mouseEvent->scenePos().x()) +  ", "  + 
                       QString::number( mouseEvent->scenePos().y()));
        }
    }


  return false;
}

Christian Ehrlicher

@sujith-D Then please mark this topic as solved, thx