PaintEvent on a Widget doesn't work on QGraphicsScene?

[SlaynX]

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:

//header
#ifndef MISSLE1_H
#define MISSLE1_H
 
#include <QGraphicsItem>
#include <QPaintEvent>
#include <QList>
#include <QPoint>
#include <QWidget>
#include <QTimer>
 
class Missle1 : public QWidget
{
 Q_OBJECT
 public:
    Missle1();
    void paintEvent(QPaintEvent *);
   // void changeDir();
 public Q_SLOTS:
    void nextFrame();
private:
    int currentFrame;
    QList<QPixmap> RocketFrame;
    QList<QPixmap> *mCurrentSprites;
    QPoint mPos;
    QTimer *TimeFrame;
};
 
//C++
#include "Missle1.h"
#include <QTimer>
#include <QPaintEvent>
#include <QPainter>
 
Missle1::Missle1()
{
 RocketFrame.append(QPixmap(":/MissleTest1.png"));
 RocketFrame.append(QPixmap(":/MissleTest2.png"));
 RocketFrame.append(QPixmap(":/MissleTest3.png"));
 mCurrentSprites = &RocketFrame;
 currentFrame = 0;
 TimeFrame = new QTimer(this);
 TimeFrame->start(50);
 connect(TimeFrame,SIGNAL(timeout()),this,SLOT(nextFrame()));
 
}
 
void Missle1::paintEvent(QPaintEvent *)
{
    QPainter painter(this);
    painter.drawPixmap(0,0,(*mCurrentSprites)[currentFrame]);
}
 
void Missle1::nextFrame()
{
    currentFrame = ++currentFrame % 3;
    repaint();
}

//header
#ifndef MISSLE1_H
#define MISSLE1_H

#include <QGraphicsItem>
#include <QPaintEvent>
#include <QList>
#include <QPoint>
#include <QWidget>
#include <QTimer>

class Missle1 : public QWidget
{
 Q_OBJECT
 public:
    Missle1();
    void paintEvent(QPaintEvent *);
   // void changeDir();
 public Q_SLOTS:
    void nextFrame();
private:
    int currentFrame;
    QList<QPixmap> RocketFrame;
    QList<QPixmap> *mCurrentSprites;
    QPoint mPos;
    QTimer *TimeFrame;
};

//C++
#include "Missle1.h"
#include <QTimer>
#include <QPaintEvent>
#include <QPainter>

Missle1::Missle1()
{
 RocketFrame.append(QPixmap(":/MissleTest1.png"));
 RocketFrame.append(QPixmap(":/MissleTest2.png"));
 RocketFrame.append(QPixmap(":/MissleTest3.png"));
 mCurrentSprites = &RocketFrame;
 currentFrame = 0;
 TimeFrame = new QTimer(this);
 TimeFrame->start(50);
 connect(TimeFrame,SIGNAL(timeout()),this,SLOT(nextFrame()));

}

void Missle1::paintEvent(QPaintEvent *)
{
    QPainter painter(this);
    painter.drawPixmap(0,0,(*mCurrentSprites)[currentFrame]);
}

void Missle1::nextFrame()
{
    currentFrame = ++currentFrame % 3;
    repaint();
}

To copy to clipboard, switch view to plain text mode 

The Widget which handles QGraphicScene and QGraphicsView

//header
#ifndef WIDGET_H
#define WIDGET_H
 
#include <QWidget>
#include "QtGui"
#include "Missle1.h"
 
class Widget : public QWidget
{
    Q_OBJECT
public:
    explicit Widget(QWidget *parent = 0);
    ~Widget();
 
private:
    QGraphicsScene *scene;
    QGraphicsView *view;
    Missle1 *rocket;
 
};
 
#endif // WIDGET_H
 
//C++
#include "widget.h"
#include "QtGui"
//#include "ui_widget.h"
 
Widget::Widget(QWidget *parent) :
    QWidget(parent)
{
 
 //QPushButton *button = new QPushButton("Hello");
 scene = new QGraphicsScene(this);
 rocket = new Missle1();
 view = new QGraphicsView(scene,this);
 scene->setSceneRect(0,0,300,300);
 scene->addWidget(rocket);
 view->show();
 
}
 
Widget::~Widget()
{
 
}

//header
#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include "QtGui"
#include "Missle1.h"

class Widget : public QWidget
{
    Q_OBJECT
public:
    explicit Widget(QWidget *parent = 0);
    ~Widget();

private:
    QGraphicsScene *scene;
    QGraphicsView *view;
    Missle1 *rocket;

};

#endif // WIDGET_H

//C++
#include "widget.h"
#include "QtGui"
//#include "ui_widget.h"

Widget::Widget(QWidget *parent) :
    QWidget(parent)
{

 //QPushButton *button = new QPushButton("Hello");
 scene = new QGraphicsScene(this);
 rocket = new Missle1();
 view = new QGraphicsView(scene,this);
 scene->setSceneRect(0,0,300,300);
 scene->addWidget(rocket);
 view->show();

}

Widget::~Widget()
{

}

To copy to clipboard, switch view to plain text mode 

[joyer83]

Try showing the Missle1-widget:

rocket->show();

rocket->show();

To copy to clipboard, switch view to plain text mode 

Also, you could try to give the missle1 a minimum width and height.