commonfactory.h

包含几乎所有的c语言的库函数

// CommonFactory.h: interface for the CommonFactory class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_COMMONFACTORY_H__4E561F76_09BE_4CBF_87BE_739F36CCCB1B__INCLUDED_)
#define AFX_COMMONFACTORY_H__4E561F76_09BE_4CBF_87BE_739F36CCCB1B__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include "GraphicFactory.h"

//=================================================================
//普通类工厂(SingleTon)
//=================================================================
class CommonFactory : public GraphicFactory  
{

public:
	//实例化普通类工厂的唯一实例对象;
	static CommonFactory* Instance();
	virtual ~CommonFactory();

protected:
	//构造函数,不允许客户调用;
	CommonFactory();

public:
	//创建点图形元素;
	virtual Point*     CreatePoint    (){ return new Point();    }

	//创建线图形元素;
	virtual Line*      CreateLine     (){ return new Line();     }

	//创建圆图形元素;
	virtual Circle*    CreateCircle   (){ return new Circle();   }

	//创建矩形图形元素;
	virtual Rect*      CreateRectangle(){ return new Rect();}

private:
	//类工厂唯一实例指针;
	static CommonFactory* m_onlyOneInstance;

	//唯一实例是否被实例化标志;
	static bool   m_onlyOne;

};

#endif // !defined(AFX_COMMONFACTORY_H__4E561F76_09BE_4CBF_87BE_739F36CCCB1B__INCLUDED_)