/***********************************************************************/ 
/* Copyright (C) 2002 Definitive Solutions, Inc.  All Rights Reserved. */ 
/* THIS COMPUTER PROGRAM IS PROPRIETARY AND CONFIDENTIAL TO DEFINITIVE */ 
/* SOLUTIONS, INC. AND ITS LICENSORS AND CONTAINS TRADE SECRETS OF     */ 
/* DEFINITIVE SOLUTIONS, INC. THAT ARE PROVIDED PURSUANT TO A WRITTEN  */ 
/* AGREEMENT CONTAINING RESTRICTIONS ON USE AND DISCLOSURE.  ANY USE,  */ 
/* REPRODUCTION, OR TRANSFER EXCEPT AS PROVIDED IN SUCH AGREEMENT      */ 
/* IS STRICTLY PROHIBITED.                                             */ 
/***********************************************************************/ 

#ifndef MYSINGLEINSTANCEH_3F2BB082_2AE3_11d6_8ACA_00B0D0529ED2_INCLUDED_
#define MYSINGLEINSTANCEH_3F2BB082_2AE3_11d6_8ACA_00B0D0529ED2_INCLUDED_
#pragma once


/////////////////////////////////////////////////////////////////////////////
// How to add this class to your application.
//
// Add MySingleInstance.cpp and MySingleInstance.h to your project in the usual
// folders.
//
// To keep the mutex alive the whole time you app is running, you must add a 
// member variable to your app class:
//
//			MySingleInstance	m_singleInstance;	// Mutex to allow only one instance 
//													// of this app to run at a time.
//
// Add this near near the top of your app's InitInstance():
/*
			// Check if an instance of our application is already running.
			if (FAILED(m_singleInstance.Create(IDR_MAINFRAME))) {
				return FALSE;
			}
*/
// Add this to your CMainFrame's PreCreateWindow() method:
/*

			// Added for MySingleInstance. Set this application's CMainFrame window's
			// class name to a unique value from the MySingleInstance object.
			CYourApp* pApp = dynamic_cast<CYourApp*> (AfxGetApp());
			ASSERT_VALID(pApp);

			if (pApp) {
				cs.lpszClass = pApp->m_singleInstance.GetClassName();
			}
*/
/////////////////////////////////////////////////////////////////////////////


/////////////////////////////////////////////////////////////////////////////
// MySingleInstance

class MySingleInstance
{
// Construction.
public:
	MySingleInstance();
	virtual ~MySingleInstance();

// Operations.
public:
	HRESULT		Create(UINT nID);
	CString		GetClassName() const;

// Data.
private:
	HANDLE		m_hMutex;		// Mutex that is locked when this app opens.
								// Needs to be at class scope so it doesn't
								// unlock at the end of a function.

	CString		m_sClassName;	// Unique name to all us to activate the 
								// running instance.
};

#endif // MYSINGLEINSTANCEH_3F2BB082_2AE3_11d6_8ACA_00B0D0529ED2_INCLUDED_