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  4. QGraphicsItem set item pos using Cursor
Forum Update on Monday, May 27th 2025

QGraphicsItem set item pos using Cursor

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qgraphicssceneqgraphicsviewqcursor
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  • D Offline
    D Offline
    Dariusz
    wrote on last edited by Dariusz
    #1

    Hey

    This is odd one.. I know... But what is the proper way to move item to cursor position. Say > item->setPos(QCursor::pos()) I tried all of the mapFromParent/Global/scene etc. I cant figure out which way I need to map it.
    Say mouseReleaseEvent>

            qDebug() << event;
            qDebug() << "E" << event->pos();
            qDebug() << "M" << QCursor::pos();
            qDebug() << "1" << mapFromGlobal(QCursor::pos());
            qDebug() << "2" << mapFromParent(QCursor::pos());
            qDebug() << "3" << mapToGlobal(QCursor::pos());
            qDebug() << "4" << mapToParent(QCursor::pos());
            qDebug() << "5" << mapFromScene(QCursor::pos());
            qDebug() << "6" << mapToScene(QCursor::pos());
        }
    

    Any hints?

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    • D Offline
      D Offline
      Dariusz
      wrote on last edited by Dariusz
      #2

      For any1 wondering, its more or less >
      item->setPos(mNodeViewPtr->mapToScene(mNodeViewPtr->mapFromGlobal(QCursor::pos())));
      you can most likely do mNodeViewPtr->viewport()->mapFromGlobal() for more precision I think but I didn't test it.

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