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[C++]监控特定文件夹的事件:三种解决方法汇总

 
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监控特定文件夹的事件:三种解决方法汇总<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

LDBIVR程序中要监视特定文件夹的文件落地或者删除事件,本来要用SHELL中的事件通知机制,后来因为要考虑到各种意外事件,如服务意外退出、服务器崩溃等,遂作罢。

对于目录事件异步通知,大致有三个方法:

调用Windowsapi函数ReadDirectoryChanges监视指定目录中文件(推荐使用),这个使用异步IO

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/base/readdirectorychangesw.asp

The ReadDirectoryChangesW function retrieves information that describes the changes within a directory.

To track changes on a volume, see change journals.

BOOL ReadDirectoryChangesW(

HANDLE hDirectory,

LPVOID lpBuffer,

DWORD nBufferLength,

BOOL bWatchSubtree,

DWORD dwNotifyFilter,

LPDWORD lpBytesReturned,

LPOVERLAPPED lpOverlapped,

LPOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine

);

或者用SHChangeNotifyRegisterSHChangeNotifyDeregister来注册事件SHChangeNotify

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/shell/reference/functions/shchangenotify.asp

SHChangeNotify Function


Notifies the system of an event that an application has performed. An application should use this function if it performs an action that may affect the Shell.

Syntax

voidSHChangeNotify(
LONGwEventId,

UINTuFlags,

LPCVOIDdwItem1,

LPCVOIDdwItem2

);

这个SHELL事件,有人这么介绍(http://qk.5nx.com/article_view.asp?id=11)。

或者调用API函数-FindFirstChangeNotification FindCloseChangeNotificationFindNextChangeNotification WaitForSingleObject

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/base/findfirstchangenotification.asp

FindFirstChangeNotification

The FindFirstChangeNotification function creates a change notification handle and sets up initial change notification filter conditions. A wait on a notification handle succeeds when a change matching the filter conditions occurs in the specified directory or subtree. However, the function does not indicate the change that satisfied the wait condition.

To retrieve information about the specific change as part of the notification, use the ReadDirectoryChangesW function.

HANDLE FindFirstChangeNotification(

LPCTSTR lpPathName,

BOOL bWatchSubtree,

DWORD dwNotifyFilter

);


著名的FileMon工具用的是虚拟驱动。

相关资源:

1:《监视程序的编制》;

2:《Win32中的目录监控》;

3:《change journals》;

4:《CDirectoryChangeWatcher - ReadDirectoryChangesW all wrapped up》;

5:《监测目录活动》;

6:《请问如何监视系统对文件的访问?》。


Disclaimers

Programmer’s Blog List

<?xml:namespace prefix = v ns = "urn:schemas-microsoft-com:vml" /><shapetype id="_x0000_t75" coordsize="21600,21600" o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f"><stroke joinstyle="miter"></stroke><formulas><f eqn="if lineDrawn pixelLineWidth 0"></f><f eqn="sum @0 1 0"></f><f eqn="sum 0 0 @1"></f><f eqn="prod @2 1 2"></f><f eqn="prod @3 21600 pixelWidth"></f><f eqn="prod @3 21600 pixelHeight"></f><f eqn="sum @0 0 1"></f><f eqn="prod @6 1 2"></f><f eqn="prod @7 21600 pixelWidth"></f><f eqn="sum @8 21600 0"></f><f eqn="prod @7 21600 pixelHeight"></f><f eqn="sum @10 21600 0"></f></formulas><path o:extrusionok="f" gradientshapeok="t" o:connecttype="rect"></path><lock v:ext="edit" aspectratio="t"></lock></shapetype><shape id="_x0000_i1025" style="WIDTH: 0.75pt; HEIGHT: 0.75pt" alt="" type="#_x0000_t75"></shape>

博客堂

博客园

Don Box's Blog

Eric.Weblog()

Blogs@asp.net

本文档仅供参考。本文档所包含的信息代表了在发布之日,zhengyun_ustc对所讨论问题的当前看法,zhengyun_ustc不保证所给信息在发布之日以后的准确性。

用户应清楚本文档的准确性及其使用可能带来的全部风险。可以复制和传播本文档,但须遵守以下条款:

  1. 复制时不得修改原文,复制内容须包含所有页

  2. 所有副本均须含有 zhengyun_ustc的版权声明以及所提供的其它声明

  3. 不得以赢利为目的对本文档进行传播




监控特定文件夹的事件:三种解决方法汇总<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

LDBIVR程序中要监视特定文件夹的文件落地或者删除事件,本来要用SHELL中的事件通知机制,后来因为要考虑到各种意外事件,如服务意外退出、服务器崩溃等,遂作罢。

对于目录事件异步通知,大致有三个方法:

调用Windowsapi函数ReadDirectoryChanges监视指定目录中文件(推荐使用),这个使用异步IO

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/base/readdirectorychangesw.asp

The ReadDirectoryChangesW function retrieves information that describes the changes within a directory.

To track changes on a volume, see change journals.

BOOL ReadDirectoryChangesW(

HANDLE hDirectory,

LPVOID lpBuffer,

DWORD nBufferLength,

BOOL bWatchSubtree,

DWORD dwNotifyFilter,

LPDWORD lpBytesReturned,

LPOVERLAPPED lpOverlapped,

LPOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine

);

或者用SHChangeNotifyRegisterSHChangeNotifyDeregister来注册事件SHChangeNotify

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/shell/reference/functions/shchangenotify.asp

SHChangeNotify Function


Notifies the system of an event that an application has performed. An application should use this function if it performs an action that may affect the Shell.

Syntax

voidSHChangeNotify(
LONGwEventId,

UINTuFlags,

LPCVOIDdwItem1,

LPCVOIDdwItem2

);

这个SHELL事件,有人这么介绍(http://qk.5nx.com/article_view.asp?id=11)。

或者调用API函数-FindFirstChangeNotification FindCloseChangeNotificationFindNextChangeNotification WaitForSingleObject

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/base/findfirstchangenotification.asp

FindFirstChangeNotification

The FindFirstChangeNotification function creates a change notification handle and sets up initial change notification filter conditions. A wait on a notification handle succeeds when a change matching the filter conditions occurs in the specified directory or subtree. However, the function does not indicate the change that satisfied the wait condition.

To retrieve information about the specific change as part of the notification, use the ReadDirectoryChangesW function.

HANDLE FindFirstChangeNotification(

LPCTSTR lpPathName,

BOOL bWatchSubtree,

DWORD dwNotifyFilter

);


著名的FileMon工具用的是虚拟驱动。

相关资源:

1:《监视程序的编制》;

2:《Win32中的目录监控》;

3:《change journals》;

4:《CDirectoryChangeWatcher - ReadDirectoryChangesW all wrapped up》;

5:《监测目录活动》;

6:《请问如何监视系统对文件的访问?》。


Disclaimers

Programmer’s Blog List

<?xml:namespace prefix = v ns = "urn:schemas-microsoft-com:vml" /><shapetype id="_x0000_t75" coordsize="21600,21600" o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f"><stroke joinstyle="miter"></stroke><formulas><f eqn="if lineDrawn pixelLineWidth 0"></f><f eqn="sum @0 1 0"></f><f eqn="sum 0 0 @1"></f><f eqn="prod @2 1 2"></f><f eqn="prod @3 21600 pixelWidth"></f><f eqn="prod @3 21600 pixelHeight"></f><f eqn="sum @0 0 1"></f><f eqn="prod @6 1 2"></f><f eqn="prod @7 21600 pixelWidth"></f><f eqn="sum @8 21600 0"></f><f eqn="prod @7 21600 pixelHeight"></f><f eqn="sum @10 21600 0"></f></formulas><path o:extrusionok="f" gradientshapeok="t" o:connecttype="rect"></path><lock v:ext="edit" aspectratio="t"></lock></shapetype><shape id="_x0000_i1025" style="WIDTH: 0.75pt; HEIGHT: 0.75pt" alt="" type="#_x0000_t75"></shape>

博客堂

博客园

Don Box's Blog

Eric.Weblog()

Blogs@asp.net

本文档仅供参考。本文档所包含的信息代表了在发布之日,zhengyun_ustc对所讨论问题的当前看法,zhengyun_ustc不保证所给信息在发布之日以后的准确性。

用户应清楚本文档的准确性及其使用可能带来的全部风险。可以复制和传播本文档,但须遵守以下条款:

  1. 复制时不得修改原文,复制内容须包含所有页

  2. 所有副本均须含有 zhengyun_ustc的版权声明以及所提供的其它声明

  3. 不得以赢利为目的对本文档进行传播




监控特定文件夹的事件:三种解决方法汇总<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

LDBIVR程序中要监视特定文件夹的文件落地或者删除事件,本来要用SHELL中的事件通知机制,后来因为要考虑到各种意外事件,如服务意外退出、服务器崩溃等,遂作罢。

对于目录事件异步通知,大致有三个方法:

调用Windowsapi函数ReadDirectoryChanges监视指定目录中文件(推荐使用),这个使用异步IO

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/base/readdirectorychangesw.asp

The ReadDirectoryChangesW function retrieves information that describes the changes within a directory.

To track changes on a volume, see change journals.

BOOL ReadDirectoryChangesW(

HANDLE hDirectory,

LPVOID lpBuffer,

DWORD nBufferLength,

BOOL bWatchSubtree,

DWORD dwNotifyFilter,

LPDWORD lpBytesReturned,

LPOVERLAPPED lpOverlapped,

LPOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine

);

或者用SHChangeNotifyRegisterSHChangeNotifyDeregister来注册事件SHChangeNotify

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/shell/reference/functions/shchangenotify.asp

SHChangeNotify Function


Notifies the system of an event that an application has performed. An application should use this function if it performs an action that may affect the Shell.

Syntax

voidSHChangeNotify(
LONGwEventId,

UINTuFlags,

LPCVOIDdwItem1,

LPCVOIDdwItem2

);

这个SHELL事件,有人这么介绍(http://qk.5nx.com/article_view.asp?id=11)。

或者调用API函数-FindFirstChangeNotification FindCloseChangeNotificationFindNextChangeNotification WaitForSingleObject

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/base/findfirstchangenotification.asp

FindFirstChangeNotification

The FindFirstChangeNotification function creates a change notification handle and sets up initial change notification filter conditions. A wait on a notification handle succeeds when a change matching the filter conditions occurs in the specified directory or subtree. However, the function does not indicate the change that satisfied the wait condition.

To retrieve information about the specific change as part of the notification, use the ReadDirectoryChangesW function.

HANDLE FindFirstChangeNotification(

LPCTSTR lpPathName,

BOOL bWatchSubtree,

DWORD dwNotifyFilter

);


著名的FileMon工具用的是虚拟驱动。

相关资源:

1:《监视程序的编制》;

2:《Win32中的目录监控》;

3:《change journals》;

4:《CDirectoryChangeWatcher - ReadDirectoryChangesW all wrapped up》;

5:《监测目录活动》;

6:《请问如何监视系统对文件的访问?》。


Disclaimers

Programmer’s Blog List

<?xml:namespace prefix = v ns = "urn:schemas-microsoft-com:vml" /><shapetype id="_x0000_t75" coordsize="21600,21600" o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f"><stroke joinstyle="miter"></stroke><formulas><f eqn="if lineDrawn pixelLineWidth 0"></f><f eqn="sum @0 1 0"></f><f eqn="sum 0 0 @1"></f><f eqn="prod @2 1 2"></f><f eqn="prod @3 21600 pixelWidth"></f><f eqn="prod @3 21600 pixelHeight"></f><f eqn="sum @0 0 1"></f><f eqn="prod @6 1 2"></f><f eqn="prod @7 21600 pixelWidth"></f><f eqn="sum @8 21600 0"></f><f eqn="prod @7 21600 pixelHeight"></f><f eqn="sum @10 21600 0"></f></formulas><path o:extrusionok="f" gradientshapeok="t" o:connecttype="rect"></path><lock v:ext="edit" aspectratio="t"></lock></shapetype><shape id="_x0000_i1025" style="WIDTH: 0.75pt; HEIGHT: 0.75pt" alt="" type="#_x0000_t75"></shape>

博客堂

博客园

Don Box's Blog

Eric.Weblog()

Blogs@asp.net

本文档仅供参考。本文档所包含的信息代表了在发布之日,zhengyun_ustc对所讨论问题的当前看法,zhengyun_ustc不保证所给信息在发布之日以后的准确性。

用户应清楚本文档的准确性及其使用可能带来的全部风险。可以复制和传播本文档,但须遵守以下条款:

  1. 复制时不得修改原文,复制内容须包含所有页

  2. 所有副本均须含有 zhengyun_ustc的版权声明以及所提供的其它声明

  3. 不得以赢利为目的对本文档进行传播




监控特定文件夹的事件:三种解决方法汇总<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

LDBIVR程序中要监视特定文件夹的文件落地或者删除事件,本来要用SHELL中的事件通知机制,后来因为要考虑到各种意外事件,如服务意外退出、服务器崩溃等,遂作罢。

对于目录事件异步通知,大致有三个方法:

调用Windowsapi函数ReadDirectoryChanges监视指定目录中文件(推荐使用),这个使用异步IO

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/base/readdirectorychangesw.asp

The ReadDirectoryChangesW function retrieves information that describes the changes within a directory.

To track changes on a volume, see change journals.

BOOL ReadDirectoryChangesW(

HANDLE hDirectory,

LPVOID lpBuffer,

DWORD nBufferLength,

BOOL bWatchSubtree,

DWORD dwNotifyFilter,

LPDWORD lpBytesReturned,

LPOVERLAPPED lpOverlapped,

LPOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine

);

或者用SHChangeNotifyRegisterSHChangeNotifyDeregister来注册事件SHChangeNotify

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/shell/reference/functions/shchangenotify.asp

SHChangeNotify Function


Notifies the system of an event that an application has performed. An application should use this function if it performs an action that may affect the Shell.

Syntax

voidSHChangeNotify(
LONGwEventId,

UINTuFlags,

LPCVOIDdwItem1,

LPCVOIDdwItem2

);

这个SHELL事件,有人这么介绍(http://qk.5nx.com/article_view.asp?id=11)。

或者调用API函数-FindFirstChangeNotification FindCloseChangeNotificationFindNextChangeNotification WaitForSingleObject

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/base/findfirstchangenotification.asp

FindFirstChangeNotification

The FindFirstChangeNotification function creates a change notification handle and sets up initial change notification filter conditions. A wait on a notification handle succeeds when a change matching the filter conditions occurs in the specified directory or subtree. However, the function does not indicate the change that satisfied the wait condition.

To retrieve information about the specific change as part of the notification, use the ReadDirectoryChangesW function.

HANDLE FindFirstChangeNotification(

LPCTSTR lpPathName,

BOOL bWatchSubtree,

DWORD dwNotifyFilter

);


著名的FileMon工具用的是虚拟驱动。

相关资源:

1:《监视程序的编制》;

2:《Win32中的目录监控》;

3:《change journals》;

4:《CDirectoryChangeWatcher - ReadDirectoryChangesW all wrapped up》;

5:《监测目录活动》;

6:《请问如何监视系统对文件的访问?》。


Disclaimers

Programmer’s Blog List

<?xml:namespace prefix = v ns = "urn:schemas-microsoft-com:vml" /><shapetype id="_x0000_t75" coordsize="21600,21600" o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f"><stroke joinstyle="miter"></stroke><formulas><f eqn="if lineDrawn pixelLineWidth 0"></f><f eqn="sum @0 1 0"></f><f eqn="sum 0 0 @1"></f><f eqn="prod @2 1 2"></f><f eqn="prod @3 21600 pixelWidth"></f><f eqn="prod @3 21600 pixelHeight"></f><f eqn="sum @0 0 1"></f><f eqn="prod @6 1 2"></f><f eqn="prod @7 21600 pixelWidth"></f><f eqn="sum @8 21600 0"></f><f eqn="prod @7 21600 pixelHeight"></f><f eqn="sum @10 21600 0"></f></formulas><path o:extrusionok="f" gradientshapeok="t" o:connecttype="rect"></path><lock v:ext="edit" aspectratio="t"></lock></shapetype><shape id="_x0000_i1025" style="WIDTH: 0.75pt; HEIGHT: 0.75pt" alt="" type="#_x0000_t75"></shape>

博客堂

博客园

Don Box's Blog

Eric.Weblog()

Blogs@asp.net

本文档仅供参考。本文档所包含的信息代表了在发布之日,zhengyun_ustc对所讨论问题的当前看法,zhengyun_ustc不保证所给信息在发布之日以后的准确性。

用户应清楚本文档的准确性及其使用可能带来的全部风险。可以复制和传播本文档,但须遵守以下条款:

  1. 复制时不得修改原文,复制内容须包含所有页

  2. 所有副本均须含有 zhengyun_ustc的版权声明以及所提供的其它声明

  3. 不得以赢利为目的对本文档进行传播




监控特定文件夹的事件:三种解决方法汇总<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

LDBIVR程序中要监视特定文件夹的文件落地或者删除事件,本来要用SHELL中的事件通知机制,后来因为要考虑到各种意外事件,如服务意外退出、服务器崩溃等,遂作罢。

对于目录事件异步通知,大致有三个方法:

调用Windowsapi函数ReadDirectoryChanges监视指定目录中文件(推荐使用),这个使用异步IO

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/base/readdirectorychangesw.asp

The ReadDirectoryChangesW function retrieves information that describes the changes within a directory.

To track changes on a volume, see change journals.

BOOL ReadDirectoryChangesW(

HANDLE hDirectory,

LPVOID lpBuffer,

DWORD nBufferLength,

BOOL bWatchSubtree,

DWORD dwNotifyFilter,

LPDWORD lpBytesReturned,

LPOVERLAPPED lpOverlapped,

LPOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine

);

或者用SHChangeNotifyRegisterSHChangeNotifyDeregister来注册事件SHChangeNotify

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/shell/reference/functions/shchangenotify.asp

SHChangeNotify Function


Notifies the system of an event that an application has performed. An application should use this function if it performs an action that may affect the Shell.

Syntax

voidSHChangeNotify(
LONGwEventId,

UINTuFlags,

LPCVOIDdwItem1,

LPCVOIDdwItem2

);

这个SHELL事件,有人这么介绍(http://qk.5nx.com/article_view.asp?id=11)。

或者调用API函数-FindFirstChangeNotification FindCloseChangeNotificationFindNextChangeNotification WaitForSingleObject

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/base/findfirstchangenotification.asp

FindFirstChangeNotification

The FindFirstChangeNotification function creates a change notification handle and sets up initial change notification filter conditions. A wait on a notification handle succeeds when a change matching the filter conditions occurs in the specified directory or subtree. However, the function does not indicate the change that satisfied the wait condition.

To retrieve information about the specific change as part of the notification, use the ReadDirectoryChangesW function.

HANDLE FindFirstChangeNotification(

LPCTSTR lpPathName,

BOOL bWatchSubtree,

DWORD dwNotifyFilter

);


著名的FileMon工具用的是虚拟驱动。

相关资源:

1:《监视程序的编制》;

2:《Win32中的目录监控》;

3:《change journals》;

4:《CDirectoryChangeWatcher - ReadDirectoryChangesW all wrapped up》;

5:《监测目录活动》;

6:《请问如何监视系统对文件的访问?》。


Disclaimers

Programmer’s Blog List

<?xml:namespace prefix = v ns = "urn:schemas-microsoft-com:vml" /><shapetype id="_x0000_t75" coordsize="21600,21600" o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f"><stroke joinstyle="miter"></stroke><formulas><f eqn="if lineDrawn pixelLineWidth 0"></f><f eqn="sum @0 1 0"></f><f eqn="sum 0 0 @1"></f><f eqn="prod @2 1 2"></f><f eqn="prod @3 21600 pixelWidth"></f><f eqn="prod @3 21600 pixelHeight"></f><f eqn="sum @0 0 1"></f><f eqn="prod @6 1 2"></f><f eqn="prod @7 21600 pixelWidth"></f><f eqn="sum @8 21600 0"></f><f eqn="prod @7 21600 pixelHeight"></f><f eqn="sum @10 21600 0"></f></formulas><path o:extrusionok="f" gradientshapeok="t" o:connecttype="rect"></path><lock v:ext="edit" aspectratio="t"></lock></shapetype><shape id="_x0000_i1025" style="WIDTH: 0.75pt; HEIGHT: 0.75pt" alt="" type="#_x0000_t75"></shape>

博客堂

博客园

Don Box's Blog

Eric.Weblog()

Blogs@asp.net

本文档仅供参考。本文档所包含的信息代表了在发布之日,zhengyun_ustc对所讨论问题的当前看法,zhengyun_ustc不保证所给信息在发布之日以后的准确性。

用户应清楚本文档的准确性及其使用可能带来的全部风险。可以复制和传播本文档,但须遵守以下条款:

  1. 复制时不得修改原文,复制内容须包含所有页

  2. 所有副本均须含有 zhengyun_ustc的版权声明以及所提供的其它声明

  3. 不得以赢利为目的对本文档进行传播




监控特定文件夹的事件:三种解决方法汇总<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

LDBIVR程序中要监视特定文件夹的文件落地或者删除事件,本来要用SHELL中的事件通知机制,后来因为要考虑到各种意外事件,如服务意外退出、服务器崩溃等,遂作罢。

对于目录事件异步通知,大致有三个方法:

调用Windowsapi函数ReadDirectoryChanges监视指定目录中文件(推荐使用),这个使用异步IO

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/base/readdirectorychangesw.asp

The ReadDirectoryChangesW function retrieves information that describes the changes within a directory.

To track changes on a volume, see change journals.

BOOL ReadDirectoryChangesW(

HANDLE hDirectory,

LPVOID lpBuffer,

DWORD nBufferLength,

BOOL bWatchSubtree,

DWORD dwNotifyFilter,

LPDWORD lpBytesReturned,

LPOVERLAPPED lpOverlapped,

LPOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine

);

或者用SHChangeNotifyRegisterSHChangeNotifyDeregister来注册事件SHChangeNotify

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/shell/reference/functions/shchangenotify.asp

SHChangeNotify Function


Notifies the system of an event that an application has performed. An application should use this function if it performs an action that may affect the Shell.

Syntax

voidSHChangeNotify(
LONGwEventId,

UINTuFlags,

LPCVOIDdwItem1,

LPCVOIDdwItem2

);

这个SHELL事件,有人这么介绍(http://qk.5nx.com/article_view.asp?id=11)。

或者调用API函数-FindFirstChangeNotification FindCloseChangeNotificationFindNextChangeNotification WaitForSingleObject

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/base/findfirstchangenotification.asp

FindFirstChangeNotification

The FindFirstChangeNotification function creates a change notification handle and sets up initial change notification filter conditions. A wait on a notification handle succeeds when a change matching the filter conditions occurs in the specified directory or subtree. However, the function does not indicate the change that satisfied the wait condition.

To retrieve information about the specific change as part of the notification, use the ReadDirectoryChangesW function.

HANDLE FindFirstChangeNotification(

LPCTSTR lpPathName,

BOOL bWatchSubtree,

DWORD dwNotifyFilter

);


著名的FileMon工具用的是虚拟驱动。

相关资源:

1:《监视程序的编制》;

2:《Win32中的目录监控》;

3:《change journals》;

4:《CDirectoryChangeWatcher - ReadDirectoryChangesW all wrapped up》;

5:《监测目录活动》;

6:《请问如何监视系统对文件的访问?》。


Disclaimers

Programmer’s Blog List

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Blogs@asp.net

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监控特定文件夹的事件:三种解决方法汇总<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

LDBIVR程序中要监视特定文件夹的文件落地或者删除事件,本来要用SHELL中的事件通知机制,后来因为要考虑到各种意外事件,如服务意外退出、服务器崩溃等,遂作罢。

对于目录事件异步通知,大致有三个方法:

调用Windowsapi函数ReadDirectoryChanges监视指定目录中文件(推荐使用),这个使用异步IO

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/base/readdirectorychangesw.asp

The ReadDirectoryChangesW function retrieves information that describes the changes within a directory.

To track changes on a volume, see change journals.

BOOL ReadDirectoryChangesW(

HANDLE hDirectory,

LPVOID lpBuffer,

DWORD nBufferLength,

BOOL bWatchSubtree,

DWORD dwNotifyFilter,

LPDWORD lpBytesReturned,

LPOVERLAPPED lpOverlapped,

LPOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine

);

或者用SHChangeNotifyRegisterSHChangeNotifyDeregister来注册事件SHChangeNotify

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/shell/reference/functions/shchangenotify.asp

SHChangeNotify Function


Notifies the system of an event that an application has performed. An application should use this function if it performs an action that may affect the Shell.

Syntax

voidSHChangeNotify(
LONGwEventId,

UINTuFlags,

LPCVOIDdwItem1,

LPCVOIDdwItem2

);

这个SHELL事件,有人这么介绍(http://qk.5nx.com/article_view.asp?id=11)。

或者调用API函数-FindFirstChangeNotification FindCloseChangeNotificationFindNextChangeNotification WaitForSingleObject

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/fileio/base/findfirstchangenotification.asp

FindFirstChangeNotification

The FindFirstChangeNotification function creates a change notification handle and sets up initial change notification filter conditions. A wait on a notification handle succeeds when a change matching the filter conditions occurs in the specified directory or subtree. However, the function does not indicate the change that satisfied the wait condition.

To retrieve information about the specific change as part of the notification, use the ReadDirectoryChangesW function.

HANDLE FindFirstChangeNotification(

LPCTSTR lpPathName,

BOOL bWatchSubtree,

DWORD dwNotifyFilter

);


著名的FileMon工具用的是虚拟驱动。

相关资源:

1:《监视程序的编制》;

2:《Win32中的目录监控》;

3:《change journals》;

4:《CDirectoryChangeWatcher - ReadDirectoryChangesW all wrapped up》;

5:《监测目录活动》;

6:《请问如何监视系统对文件的访问?》。


Disclaimers

Programmer’s Blog List

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博客堂

博客园

Don Box's Blog

Eric.Weblog()

Blogs@asp.net

本文档仅供参考。本文档所包含的信息代表了在发布之日,zhengyun_ustc对所讨论问题的当前看法,zhengyun_ustc不保证所给信息在发布之日以后的准确性。

用户应清楚本文档的准确性及其使用可能带来的全部风险。可以复制和传播本文档,但须遵守以下条款:

  1. 复制时不得修改原文,复制内容须包含所有页

  2. 所有副本均须含有 zhengyun_ustc的版权声明以及所提供的其它声明

  3. 不得以赢利为目的对本文档进行传播




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