LinuxQuestions.org - How do I draw an image with Qt?

I am having big problems trying to put an gif-image into an application written in Qt. I have removed all the other code and right now I am just trying to make an image, nothing else. The image-widget is in the class RedBar and that is the only class I have. So here are my files:

Code:

bar.h



#ifndef __BAR_H__

#define __BAR_H__



#include <qwidget.h>



class QImage;



class RedBar : public QWidget {

public:

        RedBar(const QString &filename, QWidget *parent, const char *name=0);



protected:

        void paintEvent(QPaintEvent*);



private:

        QImage *qimage;

};



#endif

Code:

bar.cc



#include <qimage.h>

#include <qpainter.h>



#include "bar.h"



RedBar::RedBar(const QString &filename, QWidget *parent, const char *name) : QWidget (parent, name) {

        qimage = new QImage;

        qimage->load(filename);

}



void RedBar::paintEvent(QPaintEvent*) {

        QPainter qpainter(this);

        qpainter.drawImage(0, 0, *qimage);

}

Code:

main.cc



#include <qapplication.h>



#include "bar.h"



int main(int argc, char *argv[]) {

        QApplication a(argc, argv);



        RedBar *bar1 = new RedBar(argv[1], 0);

        a.setMainWidget(bar1);

        bar1->show();

        return a.exec();

}

Then I compile it and run:

Code:

$ ./app redbar.gif

The code compiles without problems but when I run the program I just get a big grey app with nothing in it. The image redbar.gif is a 10x10 image created in gimp. What am I doing wrong?