#ifndef FORM_H#define FORM_H#include <QtGui>class Form : public QWidget{	Q_OBJECTpublic:	Form(QWidget * parent = 0);	enum ShapeType {		Line,		Polyline,		Rectangle,		Polygon,		Arc,		Pie,		Chord,		Ellipse,		Text	};	void setShape(ShapeType shape);public slots:	void fontChanged(const QFont& font);	void penChanged(QPen& pen);	void brushChanged(QBrush& brush);protected:	bool bDrawing;	int x,y,w,h;	void mousePressEvent(QMouseEvent *event);	void mouseMoveEvent(QMouseEvent *event);	void mouseReleaseEvent(QMouseEvent *event);	void paintEvent(QPaintEvent *event);private:	QImage bufferImage;	QImage tempImage;	ShapeType curShape;	QPen curPen;	QBrush curBrush;	QFont textFont;	int thickness;	void paint(QImage& image);};#endif