unable to display inner image

#include <QMainWindow>
#include <QApplication>
#include "PCANLight.h"
#include "Elements.h"
#include "iostream.h"
#include <QTextStream>
#include <QTimer>
#include <QStyleFactory>

#include <QImage>
#include <QPainter>
#include <QTransform>
#include <QPainterPath>
#include <QPixmap>
#include <QLabel>

#include <QStylePainter>

namespace Ui {
class Emu;
}



class Emu : public QMainWindow
{
    Q_OBJECT



public:
    explicit Emu(QWidget *parent = 0);
    ~Emu();
    PCANLight pcan;
    Elements e;
    void DrawBase(QPainter *painter);
    void DrawNeedle(QPainter *painter);

private slots:
   void UpdateCompass();
private:
    Ui::Emu *ui;
    void SpeedOMeter(QWidget *parent);
    void paintEvent(QPaintEvent *ev);
    QTimer *CompassTime;
};

Emu::Emu(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::Emu)
{
 SpeedOMeter(this);
}

void Emu::SpeedOMeter(QWidget *parent)
{
    QImage BaseImage(":/speedometer.png");
    ui->lblVehSpd->setPixmap(QPixmap::fromImage(BaseImage));
    CompassTime = new QTimer(this);
    connect(CompassTime, SIGNAL(timeout()), this, SLOT(UpdateCompass()));
    CompassTime->start(1000);

}

void Emu::paintEvent(QPaintEvent *ev)
{
    QPainter p(this);
    p.setRenderHint(QPainter::Antialiasing, true);

    p.save();
    p.translate(400, 303);
    DrawBase(&p);;
    p.restore();


    p.save();
    p.translate(ui->lblVehSpd->width() + 68, ui->lblVehSpd->height()+68);
    p.rotate(90.0);
    DrawNeedle(&p);;
    p.restore();

}

void Emu::DrawBase(QPainter *painter)
{
    QPixmap Base(":/speedometer.png");
    painter->drawPixmap(0,0,400,303, Base);
}

void Emu::DrawNeedle(QPainter *painter)
{
    QPixmap Needle(":/needle.png");
    painter->drawPixmap(200,152,ui->lblVehSpd->width(),ui->lblVehSpd->height(), Needle);
}

void Emu::UpdateCompass()
{
    update();
}



Emu::~Emu()
{
    delete ui;
}