element.h

1.通过鼠标拖拽和弹出对话框完成实体、属性、联系的绘制以及各参数设定 2.对绘制的实体、属性、联系提供合法性检查 3.对绘制的图形进行拖动、重设大小、删除 4.通过属性对话框对实体、属性、联系的

#ifndef ELEMENT_H
#define ELEMENT_H

#include "stdafx.h"

class Attribute;
class Element
{
public:
	int selecting;
	CString name;
	int type;
	CPoint e1;
	CPoint e2;
	Element* nextelement;
	
	virtual void paint(CDC& g);
    virtual int isDeleted();
	virtual void Delete();
	virtual void removeAttribute(Attribute *a);
	virtual void addAttribute(Attribute *a);
	virtual void serial(CArchive& ar);

	int isselected(CPoint* e);
	void setPoint1(int x,int y);
	void setPoint2(int x,int y);
	CPoint getPoint1();
	CPoint getPoint2();
};
#endif