C++工厂模式

C++ 的工厂模式

#define STACK_POS_TOP											(0x0001)
#define STACK_POS_INSIDE										(0x0002)

#define BEGIN_CELL_REGISTER \
public: \
	virtual CCell*	GetCell(ulong ulCellID) \
{ \
	switch(ulCellID) \
	{

#define CELL_REGISTER(_CellID_, _CellClass_) \
	case (_CellID_): \
		{ \
		CCell* pCell = new _CellClass_(); \
		if(pCell) \
			{ \
			pCell->SetCellID(ulCellID); \
			} \
			return pCell; \
		}

#define END_CELL_REGISTER \
	default: \
	break; \
	} \
	return NULL; \
} \
	virtual UI_RESULT	DeleteCell(CCell* pCell) \
{ \
	delete pCell; \
	return UI_SUCCESS; \
}


//工厂模式类
BEGIN_CELL_REGISTER
        CELL_REGISTER(CELLID_BOOT,                                CCell_Boot) 
END_CELL_REGISTER