Display Problem

**Ashwath** · 6th March 2011, 08:47

Hi All,

I have developed a QT GUI which uses IGSTK ,ITK AND VTK classes functionality.

Qt Code:

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//ScribbleArea.h is as shown below
 
class ScribbleArea : public igstk::QTWidget
{
    Q_OBJECT
 
public:
    ScribbleArea(QWidget *parent = 0,Qt::WFlags flags = 0);
 
 
protected:
    void paintEvent(QPaintEvent *event);
 
 
};
//part of ScribbleArea.cpp is as shown below
ScribbleArea::ScribbleArea(QWidget *parent,Qt::WFlags flags):igstk::QTWidget(parent,flags)
{
    setAttribute(Qt::WA_StaticContents);
 
}
void ScribbleArea::paintEvent(QPaintEvent *event)
{
    QPainter painter(this);
    painter.setRenderHint(QPainter::Antialiasing, true);
    painter.setPen(QPen(Qt::red, 12, Qt::DashDotLine, Qt::RoundCap));
    painter.setBrush(QBrush(Qt::green, Qt::SolidPattern));
    painter.drawEllipse(80, 80, 200, 200);
}
//In the constructor of the QMainWindow derived class (i.e in QFIRST.CPP)i have the below code:
 
ScribbleArea* AxialWidget;
m_AxialWidget = new ScribbleArea(ui.groupBox_4);
 
typedef igstk::View2D        View2DType;
View2DType::Pointer m_view2DAxial;
 
m_AxialWidget->RequestSetView(m_view2DAxial);

//ScribbleArea.h is as shown below

class ScribbleArea : public igstk::QTWidget
{
    Q_OBJECT

public:
    ScribbleArea(QWidget *parent = 0,Qt::WFlags flags = 0);
     

protected:
    void paintEvent(QPaintEvent *event);
  
    
};
//part of ScribbleArea.cpp is as shown below
ScribbleArea::ScribbleArea(QWidget *parent,Qt::WFlags flags):igstk::QTWidget(parent,flags)
{
    setAttribute(Qt::WA_StaticContents);
    
}
void ScribbleArea::paintEvent(QPaintEvent *event)
{
    QPainter painter(this);
    painter.setRenderHint(QPainter::Antialiasing, true);
    painter.setPen(QPen(Qt::red, 12, Qt::DashDotLine, Qt::RoundCap));
    painter.setBrush(QBrush(Qt::green, Qt::SolidPattern));
    painter.drawEllipse(80, 80, 200, 200);
}
//In the constructor of the QMainWindow derived class (i.e in QFIRST.CPP)i have the below code:

ScribbleArea* AxialWidget;
m_AxialWidget = new ScribbleArea(ui.groupBox_4);

typedef igstk::View2D        View2DType;
View2DType::Pointer m_view2DAxial;

m_AxialWidget->RequestSetView(m_view2DAxial);

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The problem is that i am not able to see the ellipse inside the m_AxialWidget when i run the application.
Please help me in this.

thanks,
ashwath