repos_ecs/Dll_OPC/Kernel/DataManager/Variable.h

// Variable.h: interface for the CVariable class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_VARIABLE_H__E5BEB1C8_4FE2_4705_986A_1E1D779EC41F__INCLUDED_)
#define AFX_VARIABLE_H__E5BEB1C8_4FE2_4705_986A_1E1D779EC41F__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
#include<Afxdisp.h>

class EXPORT_CLASS CVariable : public COleVariant
{
	friend CDataNodeBase;
public:
	CVariable();
	virtual ~CVariable();
	virtual CString GetTextValue();
	virtual void SetTextValue(CString strTextValue, VARTYPE vtSrc);
	virtual CString GetSaveFmtTxt();
	virtual void	SetSaveFmtTxt(CString strSaveFmtTxt);
	VARTYPE GetVarType();
	static CString GetTypeName(VARTYPE vt);
	CVariable& operator = (COleVariant & var);

	// 获取特性
	virtual CString GetAttributesMsg();

	// 设置特性
	void SetAttributes(BOOL bIsDesignTimeVar, BOOL bCanRead, BOOL bCanWrite, VARTYPE vtSrc);
	
protected:
	void SetString (LPCTSTR lpszSrc, VARTYPE vtSrc);
	CString m_strTextValue;
	BOOL m_bCanRead;
	BOOL m_bCanWrite;
	BOOL m_bIsDesignTimeVar;// 1: 设计时变量, -1:纯运行时变量,此类变量不需要保存, 0: 运行时变量,但此类变量需要保存
};

#define DefineSetVariableValue(Var, Value) \
{\
	*((COleVariant*)Var) = Value;\
}\

#define DefineVar(Var) (*((COleVariant*)Var))

#endif // !defined(AFX_VARIABLE_H__E5BEB1C8_4FE2_4705_986A_1E1D779EC41F__INCLUDED_)