From eb34526ff7c034a120096db157278184ff946913 Mon Sep 17 00:00:00 2001
From: fcolin
Date: Thu, 1 Feb 2007 13:07:29 +0000
Subject:  Utilisateur : Fcolin       Date :  8/11/02   Heure : 11:50 Créé
 Commentaire:  (vss 1)

---
 IvyFileMon/DelayedDirectoryChangeHandler.cpp | 1414 ++++++++++++++++++++++++++
 1 file changed, 1414 insertions(+)
 create mode 100644 IvyFileMon/DelayedDirectoryChangeHandler.cpp

(limited to 'IvyFileMon')

diff --git a/IvyFileMon/DelayedDirectoryChangeHandler.cpp b/IvyFileMon/DelayedDirectoryChangeHandler.cpp
new file mode 100644
index 0000000..1c4daf0
--- /dev/null
+++ b/IvyFileMon/DelayedDirectoryChangeHandler.cpp
@@ -0,0 +1,1414 @@
+// DelayedDirectoryChangeHandler.cpp: implementation of the CDelayedDirectoryChangeHandler2 class.
+//
+//////////////////////////////////////////////////////////////////////
+
+#include "stdafx.h"
+#include "DirectoryChanges.h"
+#include "DelayedDirectoryChangeHandler.h"
+#include <process.h>//for _beginthreadex
+
+#include <shlwapi.h>				 // for PathMatchSpec
+#pragma comment( lib, "shlwapi.lib") // function
+
+
+#ifdef _DEBUG
+#undef THIS_FILE
+static char THIS_FILE[]=__FILE__;
+#define new DEBUG_NEW
+#endif
+
+#define UWM_DELAYED_DIRECTORY_NOTIFICATION (WM_APP+1024)
+
+
+HINSTANCE GetInstanceHandle()
+{
+	return (HINSTANCE)GetModuleHandle(NULL);
+	// ASSERT( AfxGetInstanceHandle() == (HINSTANCE)GetModuleHandle(NULL) ); <-- true for building .exe's 
+	//NOTE: In Dll's using shared MFC, AfxGetInstanceHandle() != (HINSTANCE)GetModuleHandle(NULL)...
+	//don't know if this is the case for dll's using static MFC
+}
+static inline bool IsEmptyString(LPCTSTR sz)
+{
+	return (bool)(sz==NULL || *sz == 0);
+}
+/*********************************************************
+  PathMatchSpec() requires IE 4.0 or greater on NT...
+  if running on NT 4.0 w/ out IE 4.0, then uses this function instead.
+
+  Based on code by Jack Handy:
+  http://www.codeproject.com/string/wildcmp.asp
+
+  Changed slightly to match the PathMatchSpec signature, be unicode compliant & to ignore case by myself.
+  
+*********************************************************/
+
+#define _TESTING_WILDCMP_ONLY_ 
+
+BOOL STDAPICALLTYPE wildcmp(LPCTSTR string, LPCTSTR wild ) 
+{
+	const TCHAR *cp, *mp;
+	cp = mp = NULL;
+	
+	while ((*string) && (*wild != _T('*'))) 
+	{
+		if ((_toupper(*wild) != _toupper(*string)) && (*wild != _T('?'))) 
+		{
+			return FALSE;
+		}
+		wild++;
+		string++;
+	}
+		
+	while (*string) 
+	{
+		if (*wild == _T('*')) 
+		{
+			if (!*++wild) 
+			{
+				return TRUE;
+			}
+			mp = wild;
+			cp = string+1;
+		} 
+		else 
+		if ((_toupper(*wild) == _toupper(*string)) || (*wild == _T('?'))) 
+		{
+			wild++;
+			string++;
+		} 
+		else 
+		{
+			wild = mp;
+			string = cp++;
+		}
+	}
+		
+	while (*wild == _T('*')) 
+	{
+		wild++;
+	}
+	return (!*wild)? TRUE : FALSE;
+}
+
+//////////////////////////////////////////////////////////////////////////
+//
+//CDirChangeNotification member functions:
+//
+CDirChangeNotification::CDirChangeNotification(CDelayedDirectoryChangeHandler *	pDelayedHandler, DWORD dwPartialPathOffset)
+:m_pDelayedHandler( pDelayedHandler )
+,m_szFileName1(NULL)
+,m_szFileName2(NULL)
+,m_dwError(0UL)
+,m_dwPartialPathOffset(dwPartialPathOffset)
+{
+	ASSERT( pDelayedHandler );
+}
+
+CDirChangeNotification::~CDirChangeNotification()
+{
+	if( m_szFileName1 ) free(m_szFileName1), m_szFileName1 = NULL;
+	if( m_szFileName2 ) free(m_szFileName2), m_szFileName2 = NULL;
+}
+
+void CDirChangeNotification::DispatchNotificationFunction()
+{
+	ASSERT( m_pDelayedHandler );
+	if( m_pDelayedHandler )
+		m_pDelayedHandler->DispatchNotificationFunction( this );
+}
+
+void CDirChangeNotification::PostOn_FileAdded(LPCTSTR szFileName)
+{
+	ASSERT( szFileName );
+	m_eFunctionToDispatch	= eOn_FileAdded;
+	m_szFileName1			= _tcsdup( szFileName) ;
+	//
+	// post the message so it'll be dispatch by another thread.
+	PostNotification();
+
+}
+void CDirChangeNotification::PostOn_FileRemoved(LPCTSTR szFileName)
+{
+	ASSERT( szFileName );
+	m_eFunctionToDispatch	= eOn_FileRemoved;
+	m_szFileName1			= _tcsdup( szFileName) ;
+	//
+	// post the message so it'll be dispatched by another thread.
+	PostNotification();
+	
+}
+void CDirChangeNotification::PostOn_FileNameChanged(LPCTSTR szOldName, LPCTSTR szNewName)
+{
+	ASSERT( szOldName && szNewName );
+
+	m_eFunctionToDispatch	= eOn_FileNameChanged;
+	m_szFileName1			= _tcsdup( szOldName) ;
+	m_szFileName2			= _tcsdup( szNewName) ;
+	//
+	// post the message so it'll be dispatched by another thread.
+	PostNotification();
+	
+}
+
+void CDirChangeNotification::PostOn_FileModified(LPCTSTR szFileName)
+{
+	ASSERT( szFileName );
+
+	m_eFunctionToDispatch	= eOn_FileModified;
+	m_szFileName1			= _tcsdup( szFileName );
+	//
+	// post the message so it'll be dispatched by another thread.
+	PostNotification();
+}
+
+void CDirChangeNotification::PostOn_ReadDirectoryChangesError(DWORD dwError, LPCTSTR szDirectoryName)
+{
+	ASSERT( szDirectoryName );
+
+	m_eFunctionToDispatch = eOn_ReadDirectoryChangesError;
+	m_dwError			  = dwError;
+	m_szFileName1		  = _tcsdup(szDirectoryName);
+	//
+	// post the message so it'll be dispatched by the another thread.
+	PostNotification();
+	
+}
+
+void CDirChangeNotification::PostOn_WatchStarted(DWORD dwError, LPCTSTR szDirectoryName)
+{
+	ASSERT( szDirectoryName );
+
+	m_eFunctionToDispatch = eOn_WatchStarted;
+	m_dwError			  =	dwError;
+	m_szFileName1		  = _tcsdup(szDirectoryName);
+
+	PostNotification();
+}
+
+void CDirChangeNotification::PostOn_WatchStopped(LPCTSTR szDirectoryName)
+{
+	ASSERT( szDirectoryName );
+
+	m_eFunctionToDispatch = eOn_WatchStopped;
+	m_szFileName1		  = _tcsdup(szDirectoryName);
+
+	PostNotification();
+}
+
+void CDirChangeNotification::PostNotification()
+{
+	ASSERT( m_pDelayedHandler );
+	if( m_pDelayedHandler )
+		m_pDelayedHandler->PostNotification( this );
+}
+
+static LRESULT CALLBACK DelayedNotificationWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
+//
+//	This is the wndproc for the notification window
+//
+//	it's here to dispatch the notifications to the client
+//
+{
+	if( message == UWM_DELAYED_DIRECTORY_NOTIFICATION )
+	{
+		CDirChangeNotification * pNotification = reinterpret_cast<CDirChangeNotification*>(lParam);
+		ASSERT(  pNotification );
+		if( pNotification )
+		{
+			DWORD dwEx(0);
+			__try{
+				pNotification->DispatchNotificationFunction();
+			}
+			__except(dwEx = GetExceptionCode(), EXCEPTION_EXECUTE_HANDLER){
+				//An exception was raised:
+				//
+				//	Likely cause: there was a problem creating the CDelayedDirectoryChangeHandler::m_hWatchStoppedDispatchedEvent object
+				//	and the change handler object was deleted before the notification could be dispatched to this function.
+				//
+				//  or perhaps, somebody's implementation of an overridden function caused an exception
+				TRACE(_T("Following exception occurred: %d -- File: %s Line: %d\n"), dwEx, _T(__FILE__), __LINE__);
+			}
+		}
+		
+		return 0UL;
+	}
+	else
+		return DefWindowProc(hWnd,message,wParam,lParam);
+}
+
+//////////////////////////////////////////////////////////////////////
+// Construction/Destruction
+//////////////////////////////////////////////////////////////////////
+//
+//CDelayedNotificationWindow static member vars:
+//
+long CDelayedNotificationWindow::s_nRefCnt = 0L;
+HWND CDelayedNotificationWindow::s_hWnd = NULL;
+BOOL CDelayedNotificationWindow::s_bRegisterWindow = FALSE;
+//
+//
+long CDelayedNotificationWindow::AddRef()//creates window for first time if necessary
+{
+	if( InterlockedIncrement(&s_nRefCnt) == 1
+		||	!::IsWindow( s_hWnd ) )
+	{
+		TRACE(_T("CDelayedNotificationWindow -- Creating the notification window\n"));
+		VERIFY( CreateNotificationWindow() );
+	}
+	return s_nRefCnt;
+}
+
+long CDelayedNotificationWindow::Release()//destroys window for last time if necessary
+{
+	long nRefCnt = -1;
+	if( (nRefCnt = InterlockedDecrement(&s_nRefCnt)) == 0 )
+	{
+		//no body else using the window so destroy it?
+		TRACE(_T("CDelayedNotificationWindow -- Destroying the notification window\n"));
+		DestroyWindow( s_hWnd );
+		s_hWnd = NULL;
+	}
+	return nRefCnt;
+}
+BOOL CDelayedNotificationWindow::RegisterWindowClass(LPCTSTR szClassName)
+//
+//	registers our own window class to use as the hidden notification window.
+//
+{
+	WNDCLASS wc = {0};
+	
+	wc.style = 0;
+	wc.hInstance		= GetInstanceHandle();
+	wc.lpszClassName	= szClassName;
+	wc.hbrBackground	= (HBRUSH)GetStockObject( WHITE_BRUSH );
+	wc.lpfnWndProc		= DelayedNotificationWndProc;
+	
+	ATOM ant = RegisterClass( &wc );
+	if( ant == NULL )
+	{
+		TRACE(_T("CDirChangeNotification::RegisterWindowClass - RegisterClass failed: %d\n"), GetLastError());
+	}
+	return (BOOL)(ant!= NULL);
+	
+}
+
+BOOL CDelayedNotificationWindow::CreateNotificationWindow()
+//
+//	Create the hidden notification windows.
+//
+{
+	TCHAR szClassName[] = _T("Delayed_Message_Sender");
+	if( !s_bRegisterWindow )
+		s_bRegisterWindow = RegisterWindowClass(szClassName);
+	s_hWnd 	= CreateWindowEx(0, szClassName, _T("DelayedWnd"),0,0,0,0,0, NULL, 0, 
+							GetInstanceHandle(), NULL);
+	if( s_hWnd == NULL )
+	{
+		TRACE(_T("Unable to create notification window! GetLastError(): %d\n"), GetLastError());
+		TRACE(_T("File: %s Line: %d\n"), _T(__FILE__), __LINE__);
+	}
+	
+	return (BOOL)(s_hWnd != NULL);
+}
+void CDelayedNotificationWindow::PostNotification(CDirChangeNotification * pNotification)
+//
+//	Posts a message to a window created in the main 
+//	thread.
+//	The main thread catches this message, and dispatches it in 
+//	the context of the main thread.
+//
+{
+	ASSERT( pNotification );
+	ASSERT( s_hWnd );
+	ASSERT( ::IsWindow( s_hWnd ) );
+
+	PostMessage(s_hWnd, 
+				UWM_DELAYED_DIRECTORY_NOTIFICATION, 
+				0, 
+				reinterpret_cast<LPARAM>( pNotification ));
+
+//  if you don't want the notification delayed, 
+//  
+//	if( false )
+//	{
+//		pNotification->DispatchNotificationFunction();
+//	}
+}
+
+/////////////////////////////////////////////////////////
+//	CDelayedNoticationThread
+//
+long	CDelayedNotificationThread::s_nRefCnt = 0L;
+HANDLE	CDelayedNotificationThread::s_hThread = NULL;
+DWORD	CDelayedNotificationThread::s_dwThreadID = 0UL;
+
+void CDelayedNotificationThread::PostNotification(CDirChangeNotification * pNotification)
+{
+	ASSERT( s_hThread != NULL );
+	ASSERT( s_dwThreadID != 0 );
+
+	if(
+		!PostThreadMessage(s_dwThreadID, 
+						   UWM_DELAYED_DIRECTORY_NOTIFICATION, 
+						   0, 
+						   reinterpret_cast<LPARAM>(pNotification))
+	  )
+	{
+		//Note, this can sometimes fail.
+		//Will fail if: s_dwThreadID references a invalid thread id(the thread has died for example)
+		// OR will fail if the thread doesn't have a message queue.
+		//
+		//	This was failing because the thread had not been fully started by the time PostThreadMessage had been called
+		//
+		//Note: if this fails, it creates a memory leak because
+		//the CDirChangeNotification object that was allocated and posted
+		//to the thread is actually never going to be dispatched and then deleted.... it's
+		//hanging in limbo.....
+
+		//
+		//	The fix for this situation was to force the thread that starts
+		//	this worker thread to wait until the worker thread was fully started before
+		//	continueing.  accomplished w/ an event... also.. posting a message to itself before signalling the 
+		//  'spawning' thread that it was started ensured that there was a message pump
+		//  associated w/ the worker thread by the time PostThreadMessage was called.
+		TRACE(_T("PostThreadMessage() failed while posting to thread id: %d! GetLastError(): %d%s\n"), s_dwThreadID, GetLastError(), GetLastError() == ERROR_INVALID_THREAD_ID? _T("(ERROR_INVALID_THREAD_ID)") : _T(""));
+	}
+}
+
+bool CDelayedNotificationThread::StartThread()
+{
+	TRACE(_T("CDelayedNotificationThread::StartThread()\n"));
+	ASSERT( s_hThread == NULL 
+		&&	s_dwThreadID == 0 );
+	s_hThread = (HANDLE)_beginthreadex(NULL,0, 
+								ThreadFunc, this, 0, (UINT*) &s_dwThreadID);
+	if( s_hThread )
+		WaitForThreadStartup();
+
+	return s_hThread == NULL ? false : true;
+
+}
+
+bool CDelayedNotificationThread::StopThread()
+{
+	TRACE(_T("CDelayedNotificationThread::StopThread()\n"));
+	if( s_hThread != NULL 
+	&&	s_dwThreadID != 0 )
+	{
+		PostThreadMessage(s_dwThreadID, WM_QUIT, 0,0);
+
+		WaitForSingleObject(s_hThread, INFINITE);
+		CloseHandle(s_hThread);
+		s_hThread	 = NULL;
+		s_dwThreadID = 0UL;
+		return true;
+	}
+	return true;//already shutdown
+}
+
+UINT __stdcall CDelayedNotificationThread::ThreadFunc(LPVOID lpvThis)
+{
+	//UNREFERENCED_PARAMETER( lpvThis );
+	//
+	//	Implements a simple message pump
+	//
+	CDelayedNotificationThread * pThis = reinterpret_cast<CDelayedNotificationThread*>(lpvThis);
+	ASSERT( pThis );
+
+	//
+	//	Insure that this thread has a message queue by the time another
+	//	thread gets control and tries to use PostThreadMessage
+	//	problems can happen if someone tries to use PostThreadMessage
+	//	in between the time pThis->SignalThreadStartup() is called,
+	//	and the first call to GetMessage();
+
+	::PostMessage(NULL, WM_NULL, 0,0);//if this thread didn't have a message queue before this, it does now.
+
+
+	//
+	//
+	//	Signal that this thread has started so that StartThread can continue.
+	//
+	if( pThis ) pThis->SignalThreadStartup();
+
+	TRACE(_T("CDelayedNotificationThread::ThreadFunc() ThreadID: %d -- Starting\n"), GetCurrentThreadId());
+	MSG msg;
+	do{
+		while( GetMessage(&msg, NULL, 0,0) )//note GetMessage() can return -1, but only if i give it a bad HWND.(HWND for another thread for example)..i'm not giving an HWND, so no problemo here.
+		{
+			if( msg.message == UWM_DELAYED_DIRECTORY_NOTIFICATION )
+			{
+				CDirChangeNotification * pNotification = 
+								reinterpret_cast<CDirChangeNotification *>( msg.lParam );
+				DWORD dwEx(0UL);
+
+				__try{
+				if( pNotification )
+					pNotification->DispatchNotificationFunction();
+				}
+				__except(dwEx = GetExceptionCode(), EXCEPTION_EXECUTE_HANDLER){
+				//An exception was raised:
+				//
+				//	Likely causes: 
+				//		* There was a problem creating the CDelayedDirectoryChangeHandler::m_hWatchStoppedDispatchedEvent object
+				//			and the change handler object was deleted before the notification could be dispatched to this function.
+				//
+				//		* Somebody's implementation of an overridden virtual function caused an exception
+				TRACE(_T("The following exception occurred: %d -- File: %s Line: %d\n"), dwEx, _T(__FILE__), __LINE__);
+				}
+			}
+			else
+			if( msg.message == WM_QUIT )
+			{
+				break;
+			}
+		}
+	}while( msg.message != WM_QUIT );
+	TRACE(_T("CDelayedNotificationThread::ThreadFunc() exiting. ThreadID: %d\n"), GetCurrentThreadId());
+	return 0;
+}
+
+long CDelayedNotificationThread::AddRef()
+{
+	if( InterlockedIncrement(&s_nRefCnt) == 1 )
+	{
+		VERIFY( StartThread() );
+	}
+	return s_nRefCnt;
+}
+long CDelayedNotificationThread::Release()
+{
+	if( InterlockedDecrement(&s_nRefCnt) <= 0 )
+	{
+		s_nRefCnt = 0;
+		VERIFY( StopThread() );
+	}
+	return s_nRefCnt;
+}
+
+///////////////////////////////////////////////////////
+//static member data for CDelayedDirectoryChangeHandler
+HINSTANCE CDelayedDirectoryChangeHandler::s_hShlwapi_dll = NULL;//for the PathMatchSpec() function
+BOOL CDelayedDirectoryChangeHandler::s_bShlwapi_dllExists = TRUE;
+long CDelayedDirectoryChangeHandler::s_nRefCnt_hShlwapi = 0L;
+FUNC_PatternMatchSpec CDelayedDirectoryChangeHandler::s_fpPatternMatchSpec = wildcmp;//default
+///////////////////////////////////////////////////////
+//construction destruction
+CDelayedDirectoryChangeHandler::CDelayedDirectoryChangeHandler(CDirectoryChangeHandler * pRealHandler, bool bAppHasGUI, LPCTSTR szIncludeFilter, LPCTSTR szExcludeFilter, DWORD dwFilterFlags)
+: m_pDelayNotifier( NULL )
+ ,m_pRealHandler( pRealHandler )
+ ,m_szIncludeFilter(NULL)
+ ,m_szExcludeFilter(NULL)
+ ,m_dwFilterFlags( dwFilterFlags )
+ ,m_dwPartialPathOffset( 0UL )
+ ,m_hWatchStoppedDispatchedEvent(NULL)
+ ,m_nNumIncludeFilterSpecs(0)
+ ,m_nNumExcludeFilterSpecs(0)
+{
+
+
+	ASSERT( m_pRealHandler ); 
+
+	InitializePathMatchFunc( szIncludeFilter, szExcludeFilter );
+
+	//
+	// See that we're 
+	//
+
+
+	m_hWatchStoppedDispatchedEvent = ::CreateEvent(NULL, FALSE, FALSE, NULL);//AUTO-RESET, not initially signalled
+	ASSERT( m_hWatchStoppedDispatchedEvent );
+	
+	if( bAppHasGUI )
+	{
+		//
+		//	The value true was passed to the CDirectoryChangeWatcher constructor.
+		//	It's assumed that your app has a gui, that is, it implements
+		//	a message pump.  To delay the notification to another thread,
+		//	we'll use a hidden notification window.
+		//
+		m_pDelayNotifier = new CDelayedNotificationWindow();
+	}
+	else
+	{
+		// The value 'false' was passed to the CDirectoryChangeWatcher constructor.
+		//
+		// Your app has no message pump... use a class that implements one for you
+		// in a worker thread.
+		//
+		// Notifications will be executed in this worker thread.
+		//
+		m_pDelayNotifier = new CDelayedNotificationThread();
+	}
+}
+
+CDelayedDirectoryChangeHandler::~CDelayedDirectoryChangeHandler()
+{
+	if( m_pRealHandler )
+		delete m_pRealHandler, m_pRealHandler = NULL;
+	if( m_pDelayNotifier )
+		delete m_pDelayNotifier, m_pDelayNotifier = NULL;
+
+	if( m_hWatchStoppedDispatchedEvent )
+		CloseHandle(m_hWatchStoppedDispatchedEvent), m_hWatchStoppedDispatchedEvent = NULL;
+
+	if( m_szIncludeFilter ){
+		if( m_nNumIncludeFilterSpecs == 1 )
+			free(m_szIncludeFilter);
+		else
+		{
+			TCHAR ** ppTmp = (TCHAR**)m_szIncludeFilter;
+			for(int i(0); i < m_nNumIncludeFilterSpecs; ++i)
+			{
+				free( *ppTmp++ );
+			}
+			free( m_szIncludeFilter );
+		}
+		m_szIncludeFilter = NULL;
+		m_nNumIncludeFilterSpecs;
+	}
+	if( m_szExcludeFilter ) {
+		if( m_nNumExcludeFilterSpecs == 1 )
+			free(m_szExcludeFilter);
+		else{
+			TCHAR ** ppTmp = (TCHAR**)m_szExcludeFilter;
+			for(int i(0); i < m_nNumExcludeFilterSpecs; ++i)
+			{
+				free( *ppTmp++ );
+			}
+			free( m_szExcludeFilter );
+		}
+		m_szExcludeFilter = NULL;
+		m_nNumExcludeFilterSpecs = 0;
+	}
+
+	UninitializePathMatchFunc();
+}
+
+BOOL CDelayedDirectoryChangeHandler::_PathMatchSpec(LPCTSTR szPath, LPCTSTR szPattern)
+{
+	if( s_fpPatternMatchSpec )
+	{
+		return s_fpPatternMatchSpec(szPath, szPattern);
+	}
+	ASSERT( FALSE );
+	return TRUE;//everything matches.
+}
+
+BOOL CDelayedDirectoryChangeHandler::InitializePathMatchFunc(LPCTSTR szIncludeFilter, LPCTSTR szExcludeFilter)
+//
+//
+//	To support the Include and Exclude filters, the PathMatchSpec function is used.
+//	PathMatchSpec is only supported on NT4.0 if IE 4.0 is installed.
+//
+//	for the case where this code is running on NT 4.0 w/out IE 4.0, we use
+//	a different function: wildcmp ()
+//
+//
+//	This function attempts to load shlwapi.dll dynamically and find the PathMatchSpec function.
+//
+//	if the function PathMatchSpec can't be found, the function pointer s_fpPathMatchSpec is set to wildcmp.
+//
+//
+//	Note:  wildcmp doesn't support multiple file specs separated by a semi-colon
+//	as PathMatchSpec does.... we'll support it by parsing them 
+//	when we want to test the filters, we'll call the pattern matching functions multiple times...
+//
+{
+
+	//
+	//	Copy the include/exclude filters if specified...
+	//
+	//
+	if( IsEmptyString(szIncludeFilter) 
+	&&	IsEmptyString(szExcludeFilter) )
+	{
+		return TRUE;//both the include && exclude filters aren't specified
+					//no need to initialize the pattern matching function....
+					//if filters are never used, then
+					//one less dll is loaded.
+	}
+
+#ifdef _TESTING_WILDCMP_ONLY_
+	s_hShlwapi_dll = NULL;
+	s_bShlwapi_dllExists = FALSE;
+	return InitializePatterns(szIncludeFilter, szExcludeFilter);
+#endif
+
+
+	if( s_hShlwapi_dll != NULL )
+	{
+		ASSERT( s_fpPatternMatchSpec != NULL );
+		InterlockedIncrement(&s_nRefCnt_hShlwapi);
+
+		return InitializePatterns(szIncludeFilter, szExcludeFilter);
+	}
+	else{
+		if( s_bShlwapi_dllExists == TRUE )//either the dll exists, or we haven't tried loading it yet...
+		{
+			//The pattern match function hasn't been initialized yet....
+			//
+		
+			s_hShlwapi_dll = ::LoadLibrary(_T("Shlwapi.dll"));
+			if( s_hShlwapi_dll == NULL )
+			{
+				s_bShlwapi_dllExists = FALSE;//don't try loading this dll again.
+				s_fpPatternMatchSpec = wildcmp;//even though it's set buy default, and this code will only get here once, set it just for fun.
+
+				return InitializePatterns(szIncludeFilter, szExcludeFilter);
+				
+			}
+			else
+			{
+				//Shlwapi.dll was found....check it for PathMatchSpec()
+#ifdef UNICODE 
+				s_fpPatternMatchSpec = (FUNC_PatternMatchSpec)::GetProcAddress(s_hShlwapi_dll, "PathMatchSpecW");
+#else
+				s_fpPatternMatchSpec = (FUNC_PatternMatchSpec)::GetProcAddress(s_hShlwapi_dll, "PathMatchSpecA");
+#endif
+	
+				if( s_fpPatternMatchSpec != NULL )
+				{
+					//UsesRealPathMatchSpec() will now return true.
+					//we're on NT w/ IE 4.0 or greater...(or Win2k/XP)
+					InterlockedIncrement(&s_nRefCnt_hShlwapi);
+					return InitializePatterns(szIncludeFilter, szExcludeFilter);
+				}
+				else
+				{
+					//we found shlwapi.dll, but it didn't have PathMatchSpec()
+					::FreeLibrary( s_hShlwapi_dll );
+					s_hShlwapi_dll = NULL;
+					s_bShlwapi_dllExists = FALSE;
+
+					//instead of using PathMatchSpec()
+					//we'll use wildcmp()
+					s_fpPatternMatchSpec = wildcmp;
+					//UsesRealPathMatchSpec() will now return false w/out asserting.
+
+					return InitializePatterns(szIncludeFilter, szExcludeFilter);
+				}
+			}
+			
+		}
+	}
+	return (s_fpPatternMatchSpec != NULL);
+}
+
+BOOL CDelayedDirectoryChangeHandler::InitializePatterns(LPCTSTR szIncludeFilter, LPCTSTR szExcludeFilter)
+{
+	ASSERT( !IsEmptyString(szIncludeFilter)   //one of these must have something in it, 
+		||  !IsEmptyString(szExcludeFilter) );//or else this function shouldn't be called.
+
+	if( s_hShlwapi_dll != NULL )
+	{
+		//we're using Shlwapi.dll's PathMatchSpec function....
+		//we're running on NT4.0 w/ IE 4.0 installed, or win2k/winXP(or greater)
+		//
+		//	Copy the include/exclude filters if specified...
+		//
+		//
+		// we're using the real PathMatchSpec() function which
+		//	supports multiple pattern specs...(separated by a semi-colon)
+		//	so there's only one filter spec as far as my code is concerned.
+		//
+		if( !IsEmptyString(szIncludeFilter) )
+		{
+			m_szIncludeFilter = _tcsdup(szIncludeFilter);
+			ASSERT( m_szIncludeFilter );
+			m_nNumIncludeFilterSpecs = 1;
+		}
+		if( !IsEmptyString(szExcludeFilter) )
+		{
+			m_szExcludeFilter = _tcsdup(szExcludeFilter);	
+			ASSERT( m_szExcludeFilter );
+			m_nNumExcludeFilterSpecs = 1;
+		}	
+	}
+	else
+	{
+		//shlwapi.dll isn't on this machine.... can happen on NT4.0 w/ out IE 4.0 installed.
+		ASSERT( s_bShlwapi_dllExists == FALSE );
+
+		//
+		//	we're using the function wildcmp() instead of PathMatchSpec..
+		//
+		//	this means that multiple pattern specs aren't supported...
+		// in order to support them, we'll tokenize the string into multiple
+		// pattern specs and test the string multiple times(once per pattern spec) 
+		// in order to support multiple patterns.
+		//
+		//
+		//	m_szIncludeFilter & m_szExclude filter will be used like TCHAR**'s instead of TCHAR*'s
+		//
+
+		m_nNumIncludeFilterSpecs = 0;
+		if( !IsEmptyString(szIncludeFilter) )
+		{
+			TCHAR * szTmpFilter = _tcsdup(szIncludeFilter);
+			TCHAR * pTok = _tcstok( szTmpFilter, _T(";"));
+			while( pTok )
+			{
+				m_nNumIncludeFilterSpecs++;
+				pTok = _tcstok(NULL, _T(";"));
+			}
+			if( m_nNumIncludeFilterSpecs == 1 )
+				m_szIncludeFilter = _tcsdup(szIncludeFilter);
+			else
+			{   //allocate room for pointers .. one for each token...
+				m_szIncludeFilter = (TCHAR*)malloc( m_nNumIncludeFilterSpecs * sizeof(TCHAR*));
+
+				free(szTmpFilter);
+				szTmpFilter = _tcsdup(szIncludeFilter);
+				pTok = _tcstok(szTmpFilter, _T(";"));
+				TCHAR ** ppTmp = (TCHAR**)m_szIncludeFilter;
+				while(pTok)
+				{
+					*ppTmp = _tcsdup(pTok);
+					ppTmp++;
+					pTok = _tcstok(NULL, _T(";"));
+				}
+			}
+
+			free(szTmpFilter);
+		}
+
+		//
+		//	Do the same for the Exclude filter...
+		//
+		m_nNumExcludeFilterSpecs = 0;
+		if( !IsEmptyString(szExcludeFilter) )
+		{
+			TCHAR * szTmpFilter = _tcsdup(szExcludeFilter);
+			TCHAR * pTok = _tcstok( szTmpFilter, _T(";"));
+			while( pTok )
+			{
+				m_nNumExcludeFilterSpecs++;
+				pTok = _tcstok(NULL, _T(";"));
+			}
+			if( m_nNumExcludeFilterSpecs == 1 )
+				m_szExcludeFilter = _tcsdup(szExcludeFilter);
+			else
+			{   //allocate room for pointers .. one for each token...
+				m_szExcludeFilter = (TCHAR*)malloc( m_nNumExcludeFilterSpecs * sizeof(TCHAR*));
+
+				free(szTmpFilter);
+				szTmpFilter = _tcsdup(szExcludeFilter);
+
+				pTok = _tcstok(szTmpFilter, _T(";"));
+				TCHAR ** ppTmp = (TCHAR**)m_szExcludeFilter;
+				while(pTok)
+				{
+					*ppTmp = _tcsdup(pTok);
+					ppTmp++;
+					pTok = _tcstok(NULL, _T(";"));
+				}
+			}
+			free(szTmpFilter);
+		}
+
+	}
+
+	return (m_szExcludeFilter!= NULL || (m_szIncludeFilter != NULL));
+}
+void CDelayedDirectoryChangeHandler::UninitializePathMatchFunc()
+{
+	if( s_bShlwapi_dllExists == TRUE 
+	&&  s_hShlwapi_dll != NULL )
+	{
+		if( InterlockedDecrement(&s_nRefCnt_hShlwapi) <= 0)
+		{
+			s_nRefCnt_hShlwapi = 0;
+			FreeLibrary( s_hShlwapi_dll );
+			s_hShlwapi_dll = NULL;
+			s_fpPatternMatchSpec = wildcmp;
+		}
+	}
+}
+
+bool CDelayedDirectoryChangeHandler::UsesRealPathMatchSpec() const
+//are we using PathMatchSpec() or wildcmp()?
+{
+	if( s_hShlwapi_dll != NULL && s_fpPatternMatchSpec != NULL )
+		return true;
+	if( s_hShlwapi_dll == NULL && s_fpPatternMatchSpec != NULL )
+		return false;
+
+	ASSERT( FALSE );//this function was called before InitializePathMatchFunc()
+	//oops!
+	return false;
+}
+static inline bool HasTrailingBackslash(const CString & str )
+{
+	if( str.GetLength() > 0 
+	&&	str[ str.GetLength() - 1 ] == _T('\\') )
+		return true;
+	return false;
+}
+void CDelayedDirectoryChangeHandler::SetPartialPathOffset(const CString & strWatchedDirName)
+{
+	if( m_dwFilterFlags & CDirectoryChangeWatcher::FILTERS_CHECK_PARTIAL_PATH )
+	{
+		//set the offset to 
+		if( HasTrailingBackslash( strWatchedDirName ) )
+			m_dwPartialPathOffset = strWatchedDirName.GetLength();
+		else
+			m_dwPartialPathOffset = strWatchedDirName.GetLength() + 1;
+	}
+	else
+		m_dwPartialPathOffset = 0;
+}
+
+CDirChangeNotification * CDelayedDirectoryChangeHandler::GetNotificationObject()
+//
+//	Maybe in future I'll keep a pool of these 
+//	objects around to increase performance...
+//	using objects from a cache will be faster 
+//	than allocated and destroying a new one each time.
+//	
+//  
+{
+	ASSERT( m_pRealHandler );
+	return new CDirChangeNotification(this, m_dwPartialPathOffset);//helps support FILTERS_CHECK_PARTIAL_PATH
+}
+
+void CDelayedDirectoryChangeHandler::DisposeOfNotification(CDirChangeNotification * pNotification)
+{
+	delete pNotification;
+}
+
+//These functions are called when the directory to watch has had a change made to it
+void CDelayedDirectoryChangeHandler::On_FileAdded(const CString & strFileName)
+{
+	CDirChangeNotification * p = GetNotificationObject();
+	ASSERT( p );
+	if( p ) p->PostOn_FileAdded( strFileName );
+}
+
+void CDelayedDirectoryChangeHandler::On_FileRemoved(const CString & strFileName)
+{
+	CDirChangeNotification * p = GetNotificationObject();
+	ASSERT( p );
+	if( p ) p->PostOn_FileRemoved( strFileName );
+}
+
+void CDelayedDirectoryChangeHandler::On_FileModified(const CString & strFileName)
+{
+	CDirChangeNotification * p = GetNotificationObject();
+	ASSERT( p );
+	if( p ) p->PostOn_FileModified( strFileName );
+}
+
+void CDelayedDirectoryChangeHandler::On_FileNameChanged(const CString & strOldFileName, const CString & strNewFileName)
+{
+	CDirChangeNotification * p = GetNotificationObject();	
+	ASSERT( p );
+	if( p ) p->PostOn_FileNameChanged( strOldFileName, strNewFileName );
+}
+
+void CDelayedDirectoryChangeHandler::On_ReadDirectoryChangesError(DWORD dwError, const CString & strDirectoryName)
+{
+	CDirChangeNotification * p = GetNotificationObject();
+	ASSERT( p );
+	if( p ) p->PostOn_ReadDirectoryChangesError( dwError, strDirectoryName );
+}
+
+void CDelayedDirectoryChangeHandler::On_WatchStarted(DWORD dwError, const CString & strDirectoryName)
+{
+	if( !(m_dwFilterFlags & CDirectoryChangeWatcher::FILTERS_NO_WATCHSTART_NOTIFICATION))
+	{
+		CDirChangeNotification * p = GetNotificationObject();
+
+		if( p ) p->PostOn_WatchStarted(dwError, strDirectoryName);
+	}
+}
+
+void CDelayedDirectoryChangeHandler::On_WatchStopped(const CString & strDirectoryName)
+{
+	if( !(m_dwFilterFlags & CDirectoryChangeWatcher::FILTERS_NO_WATCHSTOP_NOTIFICATION))
+	{
+		CDirChangeNotification * p = GetNotificationObject();
+
+		if( p ){
+			if( m_hWatchStoppedDispatchedEvent )
+				::ResetEvent(m_hWatchStoppedDispatchedEvent);
+
+			p->PostOn_WatchStopped( strDirectoryName );
+
+			//	Wait that this function has been dispatched to the other thread
+			//	before continueing.  This object may be getting deleted
+			//	soon after this function returns, and before the function can be
+			//	dispatched to the other thread....
+			WaitForOnWatchStoppedDispatched();
+		}
+	}
+}
+
+
+void CDelayedDirectoryChangeHandler::PostNotification(CDirChangeNotification * pNotification)
+{
+	if( m_pDelayNotifier )
+		m_pDelayNotifier->PostNotification( pNotification );
+}
+
+inline bool IsNonFilterableEvent( CDirChangeNotification::eFunctionToDispatch eEvent)
+// Helper function
+//	For filtering events..... these functions can not be filtered out.
+//
+{
+	if(	eEvent == CDirChangeNotification::eOn_WatchStarted 
+	||	eEvent == CDirChangeNotification::eOn_WatchStopped
+	||	eEvent == CDirChangeNotification::eOn_ReadDirectoryChangesError )
+	{
+		return true;
+	}
+	else
+		return false;
+}
+DWORD GetPathOffsetBasedOnFilterFlags(CDirChangeNotification * pNot, DWORD dwFilterFlags)
+{
+	
+	ASSERT( pNot && dwFilterFlags != 0 );
+	//helps support the filter options FILTERS_CHECK_FULL_PATH, FILTERS_CHECK_PARTIAL_PATH, and FILTERS_CHECK_FILE_NAME_ONLY
+
+	DWORD dwFileNameOffset = 0;//offset needed to support FILTERS_CHECK_FULL_PATH
+	if( dwFilterFlags & CDirectoryChangeWatcher::FILTERS_CHECK_FILE_NAME_ONLY )
+	{
+		//set the offset to support FILTERS_CHECK_FILE_NAME_ONLY
+		TCHAR * pSlash  = _tcsrchr(pNot->m_szFileName1, _T('\\'));
+		if( pSlash )
+			dwFileNameOffset = (++pSlash - pNot->m_szFileName1);
+
+		//
+		//	Because file name change notifications take place in the same directory,
+		//	the same dwFileNameOffset can be used for the szNewFileName(pNot->m_szFileName2)
+		//	when checking the filter against the new file name.
+		//
+	}
+	else
+	if( dwFilterFlags & CDirectoryChangeWatcher::FILTERS_CHECK_PARTIAL_PATH)
+	{
+		//
+		//	partial path offset is the offset 
+		//	from the beginning of the file name, 
+		//	to the end of the watched directory path...
+		//	ie: If you're watching "C:\Temp"
+		//		and the file C:\Temp\SubFolder\FileName.txt" is changed,
+		//		the partial path offset will give you "SubFolder\FileName.txt"
+		//		when this is checked against the include/exclude filter.
+		//
+		dwFileNameOffset = pNot->m_dwPartialPathOffset;
+	}
+	//else
+	//if( m_dwFilterFlags & CDirectoryChangeWatcher::FILTERS_CHECK_FULL_PATH )
+	//	dwFileNameOffset = 0;
+	
+	return dwFileNameOffset;
+}
+
+bool CDelayedDirectoryChangeHandler::NotifyClientOfFileChange(CDirChangeNotification * pNot)
+//
+//
+//	Perform the tests to see if the client wants to be notified of this
+//	file change notification.
+//
+//	Tests performed:
+//
+//	Event test:		Not all events can be filtered out.
+//					On_ReadDirectoryChangesError
+//					cannot be filtered out.
+//	Filter flags test:  User can specify flags so that no tests are performed....all notifications are sent to the user.
+//
+//	Filter test:	Test the notification file name against include and exclude filters.
+//
+//					Only files changes matching the INCLUDE filter will be passed to the client.
+//					By not specifying an include filter, all file changes are passed to the client.
+//	
+//				    Any files matching the EXCLUDE filter will not be passed to the client.
+//
+//
+//					Note: For the file name change event:
+//							If the old file name does not pass the tests for the include and exclude filter
+//							but the NEW file name does pass the test for the filters, then the client IS notified.
+//
+//	Client test:	The CDirectoryChangeHandler derived class is given a chance to filter the event by calling
+//					CDirectoryChangeHandler::On_FilterNotification()
+//
+//	RETURN VALUE:
+//	If this function returns true, the notification function is called.
+//	If it returns false, the notification is ignored.
+//			The client is notified by calling CDirectoryChangeHandler's virtual functions On_FileAdded(),On_FileRemoved(), etc.
+{
+	ASSERT( pNot );
+	ASSERT( m_pRealHandler );
+
+	//
+	//	Some events can't be ignored, or filtered out.
+	//
+
+	if( ((m_dwFilterFlags & CDirectoryChangeWatcher::FILTERS_DONT_USE_ANY_FILTER_TESTS) == CDirectoryChangeWatcher::FILTERS_DONT_USE_ANY_FILTER_TESTS)
+	||	IsNonFilterableEvent( pNot->m_eFunctionToDispatch ) )
+	{
+		// Either this is a non-filterable event, or we're not using any filters...
+		// client is notified of all events..
+		return true;
+	}
+
+	//
+	//	See if user wants to test CDirectoryChangeHandler::On_FilterNotification()
+	//	before tests are performed against the file name, and filter specifications
+	//
+	if( (m_dwFilterFlags & CDirectoryChangeWatcher::FILTERS_TEST_HANDLER_FIRST )//specified that CDirectoryChangeHandler::On_FilterNotification is to be called before any other filter tests
+	&&	!(m_dwFilterFlags & CDirectoryChangeWatcher::FILTERS_DONT_USE_HANDLER_FILTER)//and did not specify that this CDirectoryChangeHandler::On_FilterNotification is not to be called..
+	&&	!m_pRealHandler->On_FilterNotification(pNot->m_eFunctionToDispatch, pNot->m_szFileName1, pNot->m_szFileName2) )
+	{
+		//
+		//	Client specified to test handler first, and it didn't pass the test... don't notify the client.
+		//
+		return false;
+	}
+	//else
+	//
+	//	this file change passed the user test, continue testing
+	//	to see if it passes the filter tests.
+
+	DWORD dwFileNameOffset = GetPathOffsetBasedOnFilterFlags(pNot, m_dwFilterFlags);
+
+	//
+	//	See if the changed file matches the include or exclude filter
+	//	Only allow notifications for included files 
+	//	that have not been exluded.
+	//
+	if(!(m_dwFilterFlags & CDirectoryChangeWatcher::FILTERS_DONT_USE_FILTERS) )
+	{
+		if( false == IncludeThisNotification(pNot->m_szFileName1 + dwFileNameOffset)
+		||	true == ExcludeThisNotification(pNot->m_szFileName1 + dwFileNameOffset) )
+		{
+			if( pNot->m_eFunctionToDispatch != CDirChangeNotification::eOn_FileNameChanged )
+				return false;
+			else{
+				//Special case for file name change:
+				//
+				// the old file name didn't pass the include/exclude filter
+				// but if the new name passes the include/exclude filter, 
+				// we will pass it on to the client...
+
+				if( false == IncludeThisNotification(pNot->m_szFileName2 + dwFileNameOffset) 
+				||	true == ExcludeThisNotification(pNot->m_szFileName2 + dwFileNameOffset) )
+				{
+					// the new file name didn't pass the include/exclude filter test either
+					// so don't pass the notification on...
+					return false;
+				}
+
+			}
+		}
+
+	}
+	
+	//
+	//	Finally, let the client determine whether or not it wants this file notification
+	//	if this test has not already been performed...
+	//
+
+	if( (m_dwFilterFlags & CDirectoryChangeWatcher::FILTERS_TEST_HANDLER_FIRST) 
+	||	(m_dwFilterFlags & CDirectoryChangeWatcher::FILTERS_DONT_USE_HANDLER_FILTER) )
+	{
+		//	if we got this far, and this flag was specified, 
+		//	it's already passed this test,
+		//  or we're not checking it based on the filter flag FILTERS_DONT_USE_HANDLER_FILTER....
+		return true;
+	}
+	else
+	{
+		if( m_pRealHandler->On_FilterNotification(pNot->m_eFunctionToDispatch,
+											  pNot->m_szFileName1,
+											  pNot->m_szFileName2) )
+		{
+			return true;
+		}
+		else
+		{
+			//else  client's derived CDirectoryChangeHandler class chose 
+			//		not to be notified of this file change
+			return false;
+		}
+	}
+		
+	
+}
+
+bool CDelayedDirectoryChangeHandler::IncludeThisNotification(LPCTSTR szFileName)
+//
+//	The Include filter specifies which file names we should allow to notifications
+//	for... otherwise these notifications are not dispatched to the client's code.
+//
+//	Tests the file name to see if it matches a filter specification
+//
+//	RETURN VALUES:
+//		
+//		true : notifications for this file are to be included...
+//			   notifiy the client by calling the appropriate CDirectoryChangeHandler::On_Filexxx() function.
+//		false: this file is not included.... do not notifiy the client...
+//
+{
+	ASSERT( szFileName );
+
+	if( m_szIncludeFilter == NULL ) // no filter specified, all files pass....
+		return true;
+	if( m_nNumIncludeFilterSpecs == 1 )
+	{
+		return _PathMatchSpec(szFileName, m_szIncludeFilter)? true : false;
+	}
+	else
+	{
+		TCHAR ** ppTmp = (TCHAR**)m_szIncludeFilter;
+		for(int i(0); i < m_nNumIncludeFilterSpecs; ++i )
+		{
+			if( _PathMatchSpec(szFileName, *ppTmp++) )
+				return true;
+		}
+		return false;
+	}
+
+	return false;
+}
+
+bool CDelayedDirectoryChangeHandler::ExcludeThisNotification(LPCTSTR szFileName)
+//
+//	Tests the file name to see if it matches a filter specification
+//	if this function returns true, it means that this notification
+//	is NOT to be passed to the client.... changes to this kind of file
+//	are not
+//
+//	RETURN VALUES:
+//		
+//		true :   notifications for this file are to be filtered out(EXCLUDED)...
+//				 do not notifify the client code.
+//		false:   notifications for this file are NOT to be filtered out
+//
+//
+{
+
+	ASSERT( szFileName );
+
+	if( m_szExcludeFilter == NULL ) // no exclude filter... nothing is excluded...
+		return false;
+	if( m_nNumExcludeFilterSpecs == 1 )
+	{
+		if( _PathMatchSpec(szFileName, m_szExcludeFilter) )
+			return true;//exclude this notification...
+		return false;
+	}
+	else
+	{
+		TCHAR ** ppTmp = (TCHAR**)m_szExcludeFilter;
+		for(int i(0); i < m_nNumExcludeFilterSpecs; ++i )
+		{
+			if( _PathMatchSpec(szFileName, *ppTmp++) )
+				return true;//exclude this one...
+		}
+		return false;//didn't match any exclude filters...don't exclude it
+	}
+/**
+	if( m_szExcludeFilter == NULL //no exclude filter specified, not excluding anything....
+	||	!PathMatchSpec(szFileName, m_szExcludeFilter) )//or didn't match filter pattern.. this is not excluded...
+	{
+		return false;
+	}
+	return true;
+***/
+	
+}
+
+void CDelayedDirectoryChangeHandler::DispatchNotificationFunction(CDirChangeNotification * pNotification)
+/*****************************************************
+	This function is called when we want the notification to execute.
+
+	
+******************************************************/
+{
+	ASSERT( m_pRealHandler );
+	ASSERT( pNotification );
+	if( pNotification && m_pRealHandler )
+	{
+		//
+		//	Allow the client to ignore the notification
+		//
+		//
+		if( NotifyClientOfFileChange(pNotification))
+		{
+			switch( pNotification->m_eFunctionToDispatch )
+			{
+			case CDirChangeNotification::eOn_FileAdded:
+				
+				m_pRealHandler->On_FileAdded( pNotification->m_szFileName1 ); 
+				break;
+				
+			case CDirChangeNotification::eOn_FileRemoved:
+				
+				m_pRealHandler->On_FileRemoved( pNotification->m_szFileName1 );
+				break;
+				
+			case CDirChangeNotification::eOn_FileNameChanged:
+				
+				m_pRealHandler->On_FileNameChanged( pNotification->m_szFileName1, pNotification->m_szFileName2 );
+				break;
+				
+			case CDirChangeNotification::eOn_FileModified:
+				
+				m_pRealHandler->On_FileModified( pNotification->m_szFileName1 );
+				break;
+				
+			case CDirChangeNotification::eOn_ReadDirectoryChangesError:
+				
+				m_pRealHandler->On_ReadDirectoryChangesError( pNotification->m_dwError, pNotification->m_szFileName1 );
+				break;
+				
+			case CDirChangeNotification::eOn_WatchStarted:
+		
+				m_pRealHandler->On_WatchStarted(pNotification->m_dwError, pNotification->m_szFileName1);
+				break;
+		
+			case CDirChangeNotification::eOn_WatchStopped:
+				
+				try{
+					//
+					//	The exception handler is just in case of the condition described in DirectoryChanges.h
+					//	in the comments for On_WatchStopped()
+					//
+					m_pRealHandler->On_WatchStopped(pNotification->m_szFileName1);
+
+				}catch(...){
+					MessageBeep( 0xffff );
+					MessageBeep( 0xffff );
+			#ifdef DEBUG
+					MessageBox(NULL,_T("An RTFM Exception was raised in On_WatchStopped() -- see Comments for CDirectoryChangeHandler::On_WatchStopped() in DirectoryChanges.h."), _T("Programmer Note(DEBUG INFO):"), MB_ICONEXCLAMATION | MB_OK);
+			#endif
+				}
+				//
+				//	Signal that the On_WatchStopped() function has been dispatched.
+				//
+				if( m_hWatchStoppedDispatchedEvent )
+					SetEvent(m_hWatchStoppedDispatchedEvent);
+				break;
+			case CDirChangeNotification::eFunctionNotDefined:
+			default:
+				break;
+			}//end switch()
+		}
+	}	
+	if( pNotification )						 //		
+		DisposeOfNotification(pNotification);// deletes or releases the notification object from memory/use
+											 //
+}
+
+BOOL CDelayedDirectoryChangeHandler::WaitForOnWatchStoppedDispatched( )
+//
+//	When shutting down, m_pRealHandler->On_WatchStopped() will be called.
+//	Because it's possible that this object will be deleted before the notification
+//	can be dispatched to the other thread, we have to wait until we know that it's been executed
+//	before returning control.
+//
+//	This function signals that the function has been dispatched to the other
+//	thread and it will be safe to delete this object once this has returned.
+//
+{
+	ASSERT( m_hWatchStoppedDispatchedEvent );
+	DWORD dwWait = WAIT_FAILED;
+	if( m_hWatchStoppedDispatchedEvent )
+	{
+
+		if( m_bAppHasGUI == false )
+		{
+			//
+			//	The function will be dispatched to another thread...
+			//	just wait for the event to be signalled....
+			do{
+				dwWait	= WaitForSingleObject(m_hWatchStoppedDispatchedEvent, 5000);//wait five seconds
+				if( dwWait != WAIT_OBJECT_0 )
+				{
+					TRACE(_T("WARNING: Possible Deadlock detected! ThreadID: %d File: %s Line: %d\n"), GetCurrentThreadId(), _T(__FILE__), __LINE__);
+				}
+			}while( dwWait != WAIT_OBJECT_0 );
+		}
+		else
+		{
+			//
+			//	Note to self:  This thread doesn't have a message Q, and therefore can't attach to 
+			//	receive messages and process them... MsgWaitForMultipleObjects won't wake up for messages 
+			//	unless i attach myself the the other threads input Q....
+			//	just use MsgWaitForMultipleObjects() in place of WaitForSingleObject in the places where it's used...
+			//
+			do{
+				dwWait = MsgWaitForMultipleObjects(1, &m_hWatchStoppedDispatchedEvent, 
+												   FALSE, 5000, 
+												   QS_ALLEVENTS);//wake up for all events, sent messages, posted messages etc.
+				switch(dwWait)
+				{
+				case WAIT_OBJECT_0:
+					{
+						//
+						// The event has become signalled
+						//
+						
+					}break;
+				case WAIT_OBJECT_0 + 1: 
+					{
+						//
+						//	There is a message in this thread's queue, so 
+						//	MsgWaitForMultipleObjects returned.
+						//	Process those messages, and wait again.
+
+						MSG msg;
+						while( PeekMessage(&msg, NULL, 0,0, PM_REMOVE ) ) 
+						{
+							if( msg.message != WM_QUIT)
+							{
+								TranslateMessage(&msg);
+								DispatchMessage(&msg);
+							}
+							else
+							{
+								/****
+								NOTE: putting WM_QUIT back in the Q caused problems. forget about it.
+								****/
+								break;
+							}
+						}
+					}break;
+				case WAIT_TIMEOUT:
+					{
+						TRACE(_T("WARNING: Possible Deadlock detected! ThreadID: %d File: %s Line: %d\n"), GetCurrentThreadId(), _T(__FILE__), __LINE__);
+					}break;
+				}
+			}while( dwWait != WAIT_OBJECT_0 );
+			ASSERT( dwWait == WAIT_OBJECT_0 );
+		}
+
+	}
+	else
+	{
+		TRACE(_T("WARNING: Unable to wait for notification that the On_WatchStopped function has been dispatched to another thread.\n"));
+		TRACE(_T("An Exception may occur shortly.\n"));
+		TRACE(_T("File: %s Line: %d"), _T( __FILE__ ), __LINE__);
+	
+	}
+
+
+	return (dwWait == WAIT_OBJECT_0 );
+}
+
+void CDelayedDirectoryChangeHandler::SetChangedDirectoryName(const CString & strChangedDirName)
+{
+	ASSERT( m_pRealHandler );
+	CDirectoryChangeHandler::SetChangedDirectoryName(strChangedDirName);
+	if( m_pRealHandler )
+		m_pRealHandler->SetChangedDirectoryName( strChangedDirName );
+}
+const CString & CDelayedDirectoryChangeHandler::GetChangedDirectoryName() const
+{
+	if( m_pRealHandler )
+		return m_pRealHandler->GetChangedDirectoryName();
+	return CDirectoryChangeHandler::GetChangedDirectoryName();
+}
\ No newline at end of file
-- 
cgit v1.1