Coordinate problem

[AndyQT]

Hello!

I have some problems with coordinates. I have a QGraphicsScene in a QGraphicsView and on the scene there is a QGraphicsItem. I retrieve the center coordinates of the bounding box

QPointF coords= this->mapToScene(this->boundingRect().center());

QPointF coords= this->mapToScene(this->boundingRect().center());

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How can I match the coordinate system for the expression above to one of those for mouse click coordinates?:

void MyClass::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
QPoint clickCoords =  QCursor::pos();
QPointF globalPos = event->screenPos();
...

void MyClass::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
QPoint clickCoords =  QCursor::pos();
QPointF globalPos = event->screenPos();
...

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I'm sorry, this coordinate thing has been discussed so many times, but I can't figure it out.

Andy