Problems setting a background image

[franco.amato]

it returns true but is really strange, the image is there

Did you reimplement the paint event for your widget? Does the class contain Q_OBJECT macro?

Hi Wysota yes this is the class:

class ImageRenderer : public QWidget
{
    Q_OBJECT
 
public:
    ImageRenderer(QWidget* parent=0);
    ~ImageRenderer();
 
    void setImage(IplImage*);
 
public slots:
    QImage IplImageToQImage(const IplImage* iplImage);
 
protected:
    /* paint event */
    virtual void paintEvent( QPaintEvent* event );
 
private:
    QPixmap m_pixmap;
    IplImage* m_frame;
 
    /* OpenCV -> Qt */
    QImage* m_qImage;
    unsigned char* m_qImageBuffer;
};
 
#endif //#ifndef _IMAGERENDERER_H_

class ImageRenderer : public QWidget
{
    Q_OBJECT

public:
    ImageRenderer(QWidget* parent=0);
    ~ImageRenderer();

    void setImage(IplImage*);

public slots:
    QImage IplImageToQImage(const IplImage* iplImage);

protected:
    /* paint event */
    virtual void paintEvent( QPaintEvent* event );

private:
    QPixmap m_pixmap;
    IplImage* m_frame;

    /* OpenCV -> Qt */
    QImage* m_qImage;
    unsigned char* m_qImageBuffer;
};

#endif //#ifndef _IMAGERENDERER_H_

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Sure you have the uri right? what is the output of

QPixmap p(":/resources/images/logo.jpg");
qWarning() << p.isNull();

QPixmap p(":/resources/images/logo.jpg");
qWarning() << p.isNull();

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Or you don't have loaded the jpeg support. Try to set a png image for testing.

I also converted to png and nothing