limitsingleinstance.h

这是一本学习 window编程的很好的参考教材

//---------------------------------------------------------------------------
//
// LimitSingleInstance.h
//
// SUBSYSTEM:   Hook system
//				
// MODULE:      Hook server
//
// DESCRIPTION: Controls number of the process instances
//              This code is from Q243953 in case you lose the article 
//              and wonder where this code came from...
//             
//
// AUTHOR:		Ivo Ivanov ([e-mail])
// DATE:		2001 December v1.00
//
//---------------------------------------------------------------------------
#if !defined(_LIMITSINGLEINSTANCE_H_)
#define _LIMITSINGLEINSTANCE_H_

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

//---------------------------------------------------------------------------
//
// class CLimitSingleInstance
//
// this code is from Q243953 in case you lose the article and wonder
// where this code came from...
//---------------------------------------------------------------------------

class CLimitSingleInstance
{
protected:
	DWORD  m_dwLastError;
	HANDLE m_hMutex;

public:
	CLimitSingleInstance(char* pszMutexName);
	~CLimitSingleInstance(); 
	BOOL IsAnotherInstanceRunning();
};

#endif // !defined(_LIMITSINGLEINSTANCE_H_)
//----------------------------End of the file -------------------------------