怎样监控磁盘上的文件是否被打开过

CFile::GetStatus()Static BOOL PASCAL GetStatus(LPCSTR lpszFileName,CFileStatus& rStatus);rStatus
用户提供的CFileStatus结构的参考，用来接收状态信息。 CFileStatus结构有以下字段：
CTime  m_ctime  文件创建的时间。
CTime  m_mtime 文件最后一次修改的时间。
CTime  m_atime 最后一次访问文件并读取的时间。
...
这是我刚看来的，是转载监控注册表和文件夹改动的类
/////////////////////////////////////////////////////////////////////////////
//changenotify.h
#pragma once#define ERROR_NOTIFY100000L
#define ERROR_NOTIFY_ALREADY_START( ERROR_NOTIFY + 1 )///////////////////////////////////////////////////////////////////////////////DWORD CALLBACK ChangeMonitorThread( LPVOID pParam );
class CChangeMonitor
{
public:
CChangeMonitor();
virtual ~CChangeMonitor();
virtual BOOL StartMoniter( DWORD dwMonId, HWND hWnd );
virtual void EndMoniter( void );
virtual void Pause( void );
virtual void Resume( void );
protected:
virtual void SendNotify( UINT nMsg );
virtual void CallNextMoniter( void ) = 0;
virtual DWORD WaitNotify( void ) = 0;
protected:
DWORD m_dwMonId;
HANDLE m_hThread;
HWND m_hWnd;
DWORD m_dwThreadId;friend DWORD CALLBACK ChangeMonitorThread( LPVOID pParam );
};
///////////////////////////////////////////////////////////////////////////////class CDirectoryMonitor : public CChangeMonitor
{
public:
CDirectoryMonitor();
~CDirectoryMonitor();
BOOL StartMoniter( DWORD dwMonId, HWND hWnd, LPCTSTR lpPath,
BOOL bSubTree = TRUE, DWORD dwFilter = FILE_NOTIFY_CHANGE_LAST_WRITE );
void EndMoniter( void );
protected:
virtual void CallNextMoniter( void );
virtual DWORD WaitNotify( void );
protected:
HANDLE m_hNotify;
};///////////////////////////////////////////////////////////////////////////////class CRegistryMonitor : public CChangeMonitor
{
public:
CRegistryMonitor();
~CRegistryMonitor();
BOOL StartMoniter( DWORD dwMonId, HWND hWnd, HKEY hRoot, LPCTSTR lpSubKey,
DWORD dwFilter = REG_NOTIFY_CHANGE_NAME | REG_NOTIFY_CHANGE_LAST_SET );
void EndMoniter( void );
protected:
virtual void CallNextMoniter( void );
virtual DWORD WaitNotify( void );
protected:
HANDLE m_hNotify;
HKEY m_hKey;
DWORD m_dwFilter;
};/////////////////////////////////////////////////////////////////////////////
//changenotify.cpp#include "ChangeNotify.h"
CChangeMonitor::CChangeMonitor( void )
: m_hThread( NULL )
, m_hWnd( NULL )
, m_dwThreadId( 0 )
, m_dwMonId( 0 )
{
}CChangeMonitor::~CChangeMonitor( void )
{
EndMoniter();
}BOOL CChangeMonitor::StartMoniter( DWORD dwMonId, HWND hWnd )
{
// 判断是否已经启动监视
if ( NULL != m_hThread )
{
SetLastError( ERROR_NOTIFY_ALREADY_START );
TRACE_ERROR( GetLastError() );
return FALSE;
}
// 检查参数
if ( NULL == hWnd )
{
SetLastError( ERROR_INVALID_PARAMETER );
TRACE_ERROR( GetLastError() );
return FALSE;
}
m_dwMonId = dwMonId;
m_hWnd = hWnd;
// 创建监视线程
m_hThread = CreateThread( NULL, 0, ChangeMonitorThread,
(LPVOID)this, CREATE_SUSPENDED, &m_dwThreadId );
ASSERT( NULL != m_hThread );
return TRUE;
}void CChangeMonitor::EndMoniter( void )
{
// 判断线程是否存在
if ( m_hThread )
{
// 判断线程是否结束
DWORD dwExitCode;
VERIFY( GetExitCodeThread( m_hThread, &dwExitCode ) );
if ( STILL_ACTIVE == dwExitCode )
{
ASSERT( m_dwThreadId != 0 );
// 向线程发送退出消息
VERIFY( PostThreadMessage( m_dwThreadId, WM_MONITER_EXIT, 0, 0 ) );
// 使线程继续，以便结束
Resume();
// 等待线程退出
DWORD dwWaitResult = WaitForSingleObject( m_hThread, INFINITE );
ASSERT( WAIT_FAILED != dwWaitResult );
// 如果等待超时，强制结束线程
if ( WAIT_TIMEOUT == dwWaitResult )
{
if ( FALSE == TerminateThread( m_hThread, 0 ) )
{
TRACE_ERROR( -1 );
}
}
}
// 关闭线程句柄，将线程相关数据置零
VERIFY( CloseHandle( m_hThread ) );
m_hThread = NULL;
m_dwThreadId = 0;
}
m_hWnd = NULL;// 通知窗体置零
}void CChangeMonitor::Pause( void )
{
ASSERT( m_hThread );
SuspendThread( m_hThread );
}void CChangeMonitor::Resume( void )
{
ASSERT( m_hThread );
ResumeThread( m_hThread );
}void CChangeMonitor::SendNotify( UINT nMsg )
{
// 检查通知窗体句柄是否存在
ASSERT( m_hWnd != NULL );
// 发送通知消息
if ( FALSE == PostMessage( m_hWnd, nMsg, m_dwMonId, 0 ) )
{
TRACE_ERROR( GetLastError() );
}
}DWORD CALLBACK ChangeMonitorThread( LPVOID pParam )
{
// 检查参数是否为空
ASSERT( pParam != NULL );
// 得到监视器类对象指针
CChangeMonitor *pChaMon = (CChangeMonitor*)pParam;
// 检查对象
ASSERT( pChaMon->m_hThread != NULL );
ASSERT( pChaMon->m_hWnd != NULL );
ASSERT( pChaMon->m_dwThreadId != 0 );
// 进入线程消息循环
MSG msg;// 消息数据结构
while( FALSE == PeekMessage( &msg, NULL, WM_MONITER_EXIT,
WM_MONITER_EXIT, PM_REMOVE ) )
{
// 以0超时等待通知，直接返回等待结果
DWORD dwWaitResult = pChaMon->WaitNotify();
ASSERT( dwWaitResult != WAIT_FAILED );
switch( dwWaitResult )// 处理等待结果
{
case WAIT_OBJECT_0:// 通知已接收
// 向接收者发送通知消息
pChaMon->SendNotify( WM_MONITER_CHANGED );
// 继续下一次等待
pChaMon->CallNextMoniter();
break;
case WAIT_TIMEOUT:
break;
}
Sleep( 50 );
}
return 0;
}
///////////////////////////////////////////////////////////////////////////////
// CDirectoryMonitor// 构造函数
CDirectoryMonitor::CDirectoryMonitor( void )
: m_hNotify( NULL )
{
}// 析构函数
CDirectoryMonitor::~CDirectoryMonitor( void )
{
}// 启动监视
BOOL CDirectoryMonitor::StartMoniter( DWORD dwMonId, HWND hWnd, LPCTSTR lpPath,
BOOL bSubTree, DWORD dwFilter )
{
// 调用父类同名函数
if ( FALSE == CChangeMonitor::StartMoniter( dwMonId, hWnd ) )
{
return FALSE;
}
// 创建监视
m_hNotify = FindFirstChangeNotification( lpPath, bSubTree, dwFilter );
if ( INVALID_HANDLE_VALUE == m_hNotify )
{
m_hNotify = NULL;
EndMoniter();
TRACE_ERROR( GetLastError() );
return FALSE;
}
// 启动监视线程
VERIFY( ResumeThread( m_hThread ) );
return TRUE;
}void CDirectoryMonitor::EndMoniter( void )
{
// 调用父类同名函数
CChangeMonitor::EndMoniter();
// 判断通知句柄是否存在
if ( m_hNotify )
{
// 结束通知
VERIFY( FindCloseChangeNotification( m_hNotify ) );
m_hNotify = NULL;// 通知句柄置零
}
}void CDirectoryMonitor::CallNextMoniter( void )
{
VERIFY( TRUE == FindNextChangeNotification( m_hNotify ) );
}DWORD CDirectoryMonitor::WaitNotify( void )
{
return WaitForSingleObject( m_hNotify, 0 );
}///////////////////////////////////////////////////////////////////////////////
// CRegistryMonitor// 构造函数
CRegistryMonitor::CRegistryMonitor( void )
: m_hKey( NULL )
, m_hNotify( NULL )
, m_dwFilter( 0 )
{
}// 析构函数
CRegistryMonitor::~CRegistryMonitor( void )
{
}// 启动监视
BOOL CRegistryMonitor::StartMoniter( DWORD dwMonId, HWND hWnd, HKEY hRoot,
LPCTSTR lpSubKey, DWORD dwFilter )
{
// 调用父类同名函数
if ( FALSE == CChangeMonitor::StartMoniter( dwMonId, hWnd ) )
{
return FALSE;
}
// 成员数据赋值
m_dwFilter = dwFilter;
// 打开注册表键
LONG lr;
lr = RegOpenKeyEx( hRoot, lpSubKey, 0, KEY_NOTIFY, &m_hKey );
if ( ERROR_SUCCESS != lr )
{
TRACE_ERROR( lr );
return FALSE;
}
// 创建通知事件句柄
m_hNotify = CreateEvent( NULL, FALSE, FALSE, NULL );
ASSERT( NULL != m_hNotify );
// 开始监视
CallNextMoniter();
// 启动监视线程
VERIFY( ResumeThread( m_hThread ) );
return TRUE;
}// 结束监视
void CRegistryMonitor::EndMoniter( void )
{
CChangeMonitor::EndMoniter();
if ( m_hNotify )
{
VERIFY( CloseHandle( m_hNotify ) );
m_hNotify = NULL;
}
if ( m_hKey )
{
VERIFY( ERROR_SUCCESS == RegCloseKey( m_hKey ) );
m_hKey = NULL;
}
}void CRegistryMonitor::CallNextMoniter( void )
{
ASSERT( m_hKey != NULL );
ASSERT( m_hNotify != NULL );
// 创建监视句柄
VERIFY( ERROR_SUCCESS == RegNotifyChangeKeyValue( m_hKey, TRUE,
m_dwFilter, m_hNotify, TRUE ) );
}DWORD CRegistryMonitor::WaitNotify( void )
{
return WaitForSingleObject( m_hNotify, 0 );
}
少了三个define，加到头文件里就行了#define WM_MONITER( WM_USER + 1000 )
#define WM_MONITER_EXIT( WM_MONITER + 1 )
#define WM_MONITER_CHANGED( WM_MONITER + 2 )
忘了说用法了CDirectoryMonitor是用来监控文件夹
CRegistryMonitor用来监控注册表键以CDirectoryMonitor为例CDirectoryMonitor DirNotify;
DirNotify.StartMoniter( 给一个ID, 用来接收消息的窗体句柄，你要监控的文件夹 );在窗体里响应WM_MONITER_CHANGED事件，当WM_MONITER_CHANGED发送，就代表文件夹被改动了

调试易

怎样监控磁盘上的文件是否被打开过

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