Simple QtPainter problem

[rishid]

Just trying to use a QPainter to draw a line across my widget. I thought it would be easy, just not working. Here is the entire widget code.

Thanks.

#ifndef TOPBAR_H_
#define TOPBAR_H_
 
#include <QtGui/QWidget>
#include <QPainter>
#include "ui_TopBar.h"
 
class TopBar : public QWidget, private Ui::TopBarClass {
Q_OBJECT
 
public:
	TopBar(QWidget *parent = 0) :
		QWidget(parent) {
		setupUi(this);
 
		QPainter painter(this);
		painter.drawLine(0,21,240,21);
	}
};
 
#endif /*TOPBAR_H_*/

#ifndef TOPBAR_H_
#define TOPBAR_H_

#include <QtGui/QWidget>
#include <QPainter>
#include "ui_TopBar.h"

class TopBar : public QWidget, private Ui::TopBarClass {
Q_OBJECT

public:
	TopBar(QWidget *parent = 0) :
		QWidget(parent) {
		setupUi(this);

		QPainter painter(this);
		painter.drawLine(0,21,240,21);
	}
};

#endif /*TOPBAR_H_*/

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