How to get the mouse click coordinate in a scene?

? Offline

Hi..
I make some circle in one scene using QGraphicsEllipseItem. I want to grab a real coordinate (not the center of the circle) of this item when someone left-clicked every circle. Using the first code it can only detect the coordinate when I clicked outside of the circle but when I clicked inside of every circle, the coordinate not shown.

@
void DialogApplication::mousePressEvent(QMouseEvent *event)
{
if (event->button()==Qt::LeftButton){
mouse_koordinat=event->pos();
qDebug() << "coordinate in my item: " << mouse_koordinat.x();
}
}@

Using this second code there is an error message: "overloaded member function not found in 'DialogApplication' "

@void DialogApplication::mousePressEvent(QGraphicsSceneMouseEvent *event) //QMouseEvent *event) //
{
if (event->button()==Qt::LeftButton){

    mouse_koordinat=event->buttonDownScenePos(Qt::LeftButton);

    qDebug() << "coordinate in my item: " << mouse_koordinat.x();
}

}
@

I appreciate if there is a suggestion and help. Thank you...

mcosta

Hi,

is DialogApplication inherited from QGraphicsView?

The second error means you MUST define this method in class Declaration

podsvirov

Try this:
@
#include <QGraphicsEllipseItem>
#include <QDebug>
class Ellipse: public QGraphicsEllipseItem
{
public:
Ellipse(qreal x, qreal y, qreal width, qreal height, QGraphicsItem *parent = 0) :
QGraphicsEllipseItem(x, y, width, height, parent) {}
protected:
void mousePressEvent(QGraphicsSceneMouseEvent *event)
{
if (event->button() & Qt::LeftButton)
{
QPointF center = rect().center();
qDebug() << "Center:" << center;
}
}
};
@