//-----------------------------------------------------------------------------+
// Copyright (C), 1998-2007, Beijing Tangent Software Co. Ltd.
// = FileName	:   TWFlag.h
// = Version	:   ver2.0
// = Author		:   xlc
// = CreateDate	:   2002-09-09
// = Description:   类的声明
// = Maintainers: 
//                  
//-----------------------------------------------------------------------------+
#ifndef _TWFLAG_H_
#define _TWFLAG_H_

//位标志类
class GEOAPI TWFlag
{
public:
	TWFlag(int nFlg = 0);
	
	virtual ~TWFlag();

	operator int()const;
	
	TWFlag& operator += (int nVal);
	
	TWFlag& operator -= (int nVal);

	int operator + (int nVal)const;

	int operator - (int nVal)const;
	
	int GetFlag()const;
	
	bool Is(int nVal)const;
	
	bool IsEmptyFlag()const;

	bool IsNot(int nVal)const;

	bool IsSameFlag(int nVal)const;
	
	void ClearFlag();

	void AddFlag(int nVal);

	void RemoveFlag(int nVal);

	void SetFlag(int nVal);

protected:

	int w_flag;
};

typedef TWFlag GRelation;

#endif