Return QpointF = nothing from QgraphicsItem to Mainwindows

gfxx

Hi,

I try to get QPointF from My custom GraphicsItem ... with qDebug I see the correct point but nothing whet I try to call the return value from mainwindows .... my RectItem.h

class RectItem : public QObject, public QGraphicsItem
{
   Q_OBJECT
   Q_INTERFACES(QGraphicsItem)

public:

    RectItem(QGraphicsItem* parent = 0);

    void getPoint(QPointF myPointBox);

    QRectF boundingRect() const { return rect; }
    QPointF lastP() const { return m_V; }

/**** other void  ****/

private:
    QRectF rect;
    QPointF m_V;

}

my RectItem.cpp ...

void RectItem::getPoint(QPointF mypoint)
 { 
        m_V = myPointBox; 
        qDebug() << "show my calculated point:    "  << myPointBox;
        /*** exe these show 9,9 ****/
}

in my Mainwindows.h ...

private:
    Ui::MainWindow *ui;
    RectItem* m_rect;

in my Mainwindows.cpp ...

RectItem* m_rect = new RectItem();
m_rect->setRect(QRectF(i,e,w,h));

/*** some stupid work *****/

void Mainwindows::myvoid()
{
       qDebug() << "my stupid point:  "  <<  m_rect->lastP();  /**** this show everytime 0,0 when it must show 9,9 ****/

}

obviuslly I make some stupid error ... but I not aBLE TO SEE IT ....

Regards
giorgio

? Offline

Hi! The code you posted isn't complete enough to say where the bug is. Please show us more code.

gfxx

@Wieland so the posted code does not give any warning? .... At these point not Know witch part of code can post .... I search around better .... then re-post.

thanks
Giorgio

gfxx

@gfxx ... ok ok ....very :( error ...

/class RectItem : public QObject, public QGraphicsItem
{
  Q_OBJECT
  Q_INTERFACES(QGraphicsItem)

public:

   RectItem(QGraphicsItem* parent = 0);

   void getPoint(QPointF myPointBox); /*** these pass value to lastP *****/

   QRectF boundingRect() const { return rect; }
   QPointF lastP() const { return m_V; }

/**** other void  ****/

private:
   QRectF rect;
   QPointF m_V;

}

in the getPoint void ... there are m_V = MyPointBox :(:(:( .... 3hour ....

for furter reader:

the right was:

m_V.setX(MyPointBox.x());
m_V.setY(MyPointBox.y());

regards
Giorgio