Hi to all!

With the following code I want to put some pictures on a scene:
Qt Code: 
  1. #include "CMerchandizeSelector.h"
  2.  
  3. CMerchandizeSelector::CMerchandizeSelector(QWidget* pParent)
  4. {
  5.     QGraphicsScene* pScene=new QGraphicsScene(this);    // creates new scene
  6.     Q_CHECK_PTR(pScene);    // checks object creation
  7.     pScene->setItemIndexMethod(QGraphicsScene::NoIndex);
  8.     setSceneRect(minX, minY, maxX, maxY);
  9.     setScene(pScene);
  10.     setWindowTitle(trUtf8("Merchandize selector"));
  11.     // TODO: sets scene widget flags so it cannot be closed
  12. /*
  13.     m_pIconList=new QStringList;    // creates new string list for storing icon names
  14.     Q_CHECK_PTR(m_pIconList);    // checks creation
  15. */
  16.  
  17.     m_cPixmap=QPixmap(100, 100);
  18.     m_cPixmap.fill(Qt::black);
  19.  
  20.     QPainter p(&m_cPixmap);    // painter
  21.     //QPainter p(this);    // painter
  22.     p.translate(rCenterX, rCenterY);    // translated coordinate system to centre of widget
  23.     p.setWindow(QRect(minX, minY, maxX, maxY));
  24.     p.setViewport(QRect(minX, minY, maxX, maxY));
  25.  
  26.     // only for test purposes, images must be read from database
  27.     m_cImageList.append(QImage(":/images/apple_cake.png"));
  28.     m_cImageList.append(QImage(":/images/bigmac.png"));
  29.     m_cImageList.append(QImage(":/images/applejuice.png"));
  30.     m_cImageList.append(QImage(":/images/cafe_cool"));
  31.     m_cImageList.append(QImage(":/images/chesseburger.png"));
  32.     m_cImageList.append(QImage(":/images/coke.png"));
  33.  
  34.     // computes positions for images
  35.     for (m_iCounter=0; m_iCounter<iLoadTreshold; m_iCounter++)
  36.     {
  37.         QPointF tmpPoint=computePoint(0, 0, rCircleRadius, m_iCounter*rAngle*Pi/180);
  38.         m_cImagePointList.append(tmpPoint);
  39.         qDebug() << "(" << tmpPoint.rx() << ", " << tmpPoint.ry() << "); ";
  40.     }
  41.  
  42.     // draws an image at computed coords
  43.     for (m_iCounter=0; m_iCounter<m_cImageList.count(); m_iCounter++)
  44.     {
  45.         p.drawImage(m_cImagePointList.at(m_iCounter), m_cImageList.at(m_iCounter));
  46.         //p.drawImage(QPointF(80*m_iCounter, 0), m_cImageList.at(m_iCounter));
  47.     }
  48. }
  49.  
  50. CMerchandizeSelector::~CMerchandizeSelector()
  51. {
  52. }
  53.  
  54. // computes cartesian coordinates for given circle and its angle
  55. QPointF CMerchandizeSelector::computePoint(qreal rOriginX, qreal rOriginY, qreal rRadius, qreal rAngle)
  56. {
  57.     QPointF p;    // point
  58.     p.setX(rOriginX+rRadius*cos(rAngle*Pi/180));    // computes x
  59.     p.setY(rOriginX+rRadius*sin(rAngle*Pi/180));    // computes y
  60.     //p.setX(rOriginX+rRadius*cos(rAngle));    // computes x
  61.     //p.setY(rOriginX+rRadius*sin(rAngle));    // computes y
  62.     return p;    // returns p
  63. }
  64.  
  65. // painter event
  66. /*
  67. void CMerchandizeSelector::paintEvent(QPaintEvent *e)
  68. {
  69.     QPainter p(this);
  70.     p.setClipRect(e->rect());
  71.     p.drawTiledPixmap(rect(), m_cPixmap);
  72.     
  73.     for (m_iCounter=0; m_iCounter<m_cImageList.count(); m_iCounter++)
  74.     {
  75.         //p.drawImage(m_cImagePointList.at(m_iCounter), m_cImageList.at(m_iCounter));
  76.         p.drawImage(QPointF(80*m_iCounter, 0), m_cImageList.at(m_iCounter));
  77.     }
  78. }
  79. */
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Here is header file:
Qt Code: 
  1. #ifndef CMERCHANDIZESELECTOR_H_
  2. #define CMERCHANDIZESELECTOR_H_
  3.  
  4. // qt includes
  5. #include <QtGui/QGraphicsView>
  6. //#include <QtGui/QGraphicsScene>
  7. //#include <QtGui/QGraphicsItem>
  8. #include <QtGui/QImage>
  9. //#include <QtCore/QPointer>
  10. //#include <QtCore/QStringList>
  11. #include <QtCore/QPointF>
  12. #include <QtCore/QRect>
  13. //#include <QtCore/QRectF>
  14. #include <QtGui/QPainter>
  15. #include <QtGui/QPixmap>
  16. #include <QtGui/QPaintEvent>
  17. #include <QtDebug>
  18.  
  19. // math support includes
  20. #include <cmath>
  21.  
  22. // custom includes
  23. #include "globals.h"
  24.  
  25. class CMerchandizeSelector : public QGraphicsView
  26. {
  27.     Q_OBJECT
  28.  
  29. public:
  30.     CMerchandizeSelector(QWidget* pParent=0);
  31.     virtual ~CMerchandizeSelector();
  32.  
  33. private:
  34.     QList<QImage> m_cImageList;    // list of icon filenames on 3d graphics browse
  35.     QList<QPointF> m_cImagePointList;    // list of coordinates for icons
  36.     quint16 m_iCounter;    // protected loop counter
  37.     QPixmap m_cPixmap;    // pixmap
  38.     //QPointer <CLens> m_pLens;    // lens for zoming selected merchandize
  39.     //QStringList m_pIconList;    // list of icon filenames on 3d graphics browse
  40. /*
  41.     void keyPressEvent(QKeyEvent *event);
  42.     void timerEvent(QTimerEvent *event);
  43.     void wheelEvent(QWheelEvent *event);
  44.     void drawBackground(QPainter *painter, const QRectF &rect);
  45. */
  46.     //void paintEvent(QPaintEvent *e);    // painter event
  47.     QPointF computePoint(qreal rOriginX, qreal rOriginY, qreal rRadius, qreal rAngle);
  48. };
  49.  
  50. #endif /*CMERCHANDIZESELECTOR_H_*/
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And here are constants, used in app (file globals.h):
Qt Code: 
  1. // globals.h
  2.  
  3. #ifndef GLOBALS_H
  4. #define GLOBALS_H
  5.  
  6. // qt includes
  7. #include <QtGlobal>
  8.  
  9. // scene rect coords
  10. static const qint16 minX=0;
  11. static const qint16 minY=0;
  12. static const qint16 maxX=600;    // scene width
  13. static const qint16 maxY=600;    // scene height
  14.  
  15. //static const qreal rCenterX=(maxX+minX)/2;    // scente centre x
  16. static const qreal rCenterX=(maxX-minX)/2;    // scente centre x
  17. //static const qreal rCenterY=(maxY+minY)/2;    // scente centre x
  18. static const qreal rCenterY=(maxY-minY)/2;    // scente centre x
  19. static const qreal rCirleMargin=20.0;    // circle margin
  20. static const qreal rCircleRadius=maxX-rCenterX-rCirleMargin;    // radius of circle
  21.  
  22. // geometric constants
  23. static const qreal pi=3.14159265358979323846264338327950288419716939937510;    // pi constant
  24. static const qreal Pi=pi;    // alias for pi
  25. static const quint8 iLoadTreshold=10;    // icon load treshold
  26. static const qreal rEmtpyCircle=0;    // emtpy circle
  27. static const qreal rFullCircle=360;    // full circle has 360 degrees
  28. static const qreal rAngle=rFullCircle/iLoadTreshold;    // merchandize icon appears every rAngle degrees on rotary
  29.                                                         // merchandize selector
  30.  
  31. #endif
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Can anyone help me please why pictures are not shown?! I read the docs about qt's coordinate system, but I simply do not get it how it works!!!!

Please help!