是否有人在C ++ / WinAPI中有类似FileSystemWatcher的类？ [英] Does anyone have a FileSystemWatcher-like class in C++/WinAPI?

问题描述

我需要一个.Net的FileSystemWatcher模拟原始C ++ / WinAPI。
我几乎开始使用FindFirstChangeNotification / FindNextChangeNotification自己编码一个，但是我发现我可能不是第一个需要这个的人，也许有人愿意分享。

I need a .Net's FileSystemWatcher analog in raw C++/WinAPI. I almost started to code one myself using FindFirstChangeNotification/FindNextChangeNotification, but then it occurred to me that I am probably not the first one who needs this and maybe someone will be willing to share.

理想情况下，我需要的是一个类，可以使用如下：

Ideally what I need is a class which can be used as follows:

FileWatcher fw;
fw.startWatching("C:\MYDIR", "filename.dat", 
     FileWatcher::SIZE | FileWatcher::LAST_WRITE,
     &myChangeHandler);
...
fw.stopWatching();

或者如果它会使用像boost :: signal这样会更好。
但是，除了标准库之外，没有依赖项，boost和raw WinAPI。
谢谢！

Or if it would use somehting like boost::signal it would be even better. But please, no dependencies other than the Standard Library, boost and raw WinAPI. Thanks!

推荐答案

ReadDirectoryChangesW函数呢？

What about the ReadDirectoryChangesW function?

http://msdn.microsoft.com/en-us/library/aa365465 （VS.85）.aspx

它会将通知存储在缓冲区中，以便不会漏掉任何更改（除非缓冲区溢出）

It stores notifications in a buffer so you don't miss any changes (unless the buffer overflows)

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