Hey there,
I was trying to use a QPaintEvent to paint QList<QPixmap>, an animation sprite and then add it QGraphicsScene. It did paint the animation when I run it however it did not seem to paint it into the scene. Can someone help me to solve this dilemma? Here's the code:
Qt Code: 
  1. //header
  2. #ifndef MISSLE1_H
  3. #define MISSLE1_H
  4.  
  5. #include <QGraphicsItem>
  6. #include <QPaintEvent>
  7. #include <QList>
  8. #include <QPoint>
  9. #include <QWidget>
  10. #include <QTimer>
  11.  
  12. class Missle1 : public QWidget
  13. {
  14.  Q_OBJECT
  15.  public:
  16.     Missle1();
  17.     void paintEvent(QPaintEvent *);
  18.    // void changeDir();
  19.  public Q_SLOTS:
  20.     void nextFrame();
  21. private:
  22.     int currentFrame;
  23.     QList<QPixmap> RocketFrame;
  24.     QList<QPixmap> *mCurrentSprites;
  25.     QPoint mPos;
  26.     QTimer *TimeFrame;
  27. };
  28.  
  29. //C++
  30. #include "Missle1.h"
  31. #include <QTimer>
  32. #include <QPaintEvent>
  33. #include <QPainter>
  34.  
  35. Missle1::Missle1()
  36. {
  37.  RocketFrame.append(QPixmap(":/MissleTest1.png"));
  38.  RocketFrame.append(QPixmap(":/MissleTest2.png"));
  39.  RocketFrame.append(QPixmap(":/MissleTest3.png"));
  40.  mCurrentSprites = &RocketFrame;
  41.  currentFrame = 0;
  42.  TimeFrame = new QTimer(this);
  43.  TimeFrame->start(50);
  44.  connect(TimeFrame,SIGNAL(timeout()),this,SLOT(nextFrame()));
  45.  
  46. }
  47.  
  48. void Missle1::paintEvent(QPaintEvent *)
  49. {
  50.     QPainter painter(this);
  51.     painter.drawPixmap(0,0,(*mCurrentSprites)[currentFrame]);
  52. }
  53.  
  54. void Missle1::nextFrame()
  55. {
  56.     currentFrame = ++currentFrame % 3;
  57.     repaint();
  58. }
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The Widget which handles QGraphicScene and QGraphicsView

Qt Code: 
  1. //header
  2. #ifndef WIDGET_H
  3. #define WIDGET_H
  4.  
  5. #include <QWidget>
  6. #include "QtGui"
  7. #include "Missle1.h"
  8.  
  9. class Widget : public QWidget
  10. {
  11.     Q_OBJECT
  12. public:
  13.     explicit Widget(QWidget *parent = 0);
  14.     ~Widget();
  15.  
  16. private:
  19.     Missle1 *rocket;
  20.  
  21. };
  22.  
  23. #endif // WIDGET_H
  24.  
  25. //C++
  26. #include "widget.h"
  27. #include "QtGui"
  28. //#include "ui_widget.h"
  29.  
  30. Widget::Widget(QWidget *parent) :
  31.     QWidget(parent)
  32. {
  33.  
  34.  //QPushButton *button = new QPushButton("Hello");
  35.  scene = new QGraphicsScene(this);
  36.  rocket = new Missle1();
  37.  view = new QGraphicsView(scene,this);
  38.  scene->setSceneRect(0,0,300,300);
  39.  scene->addWidget(rocket);
  40.  view->show();
  41.  
  42. }
  43.  
  44. Widget::~Widget()
  45. {
  46.  
  47. }
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