WebMar 11, 2009 · 其中阻塞方式,必须采用多线程的方式,否则你的主线程被阻塞的话,对话框就动不了了。 非阻塞方式也可用多线程,结合hEvent对象来使用。 2.同步方式,如 … WebSep 22, 2024 · ReadDirectoryChangesW [in] lpOverlapped. A pointer to an OVERLAPPED structure that was specified when the overlapped operation was started. [out] lpNumberOfBytesTransferred. A pointer to a variable that receives the number of bytes that were actually transferred by a read or write operation.
Example of how to poll ReadDirectoryChangesW on Windows · …
WebNov 15, 2016 · call ReadDirectoryChangesW asynchronously and then WaitForSingleObject - almost kill asynchronous behaviour. only one advantage of this kind of loop - processBackgroundTasks(); except this - we can call ReadDirectoryChangesW synchronously with same effect. but look like main problem of OP - he not understand … Web因此,如果你保持一个跟踪文件列表,应该也可以追踪到,我无法在Windows Vista上重现此现象。. 你还会收到一些意想不到的通知。. 例如,即使设置ReadDirectoryChangesW的参数,不通知子目录,仍然会得到通知。. 假设有两个目录C:A 和C:AB,如果你移动info.txt文件从 … cycloplegics and mydriatics
文件监视ReadDirectoryChangesW - 百度知道
WebMay 4, 2012 · It seems to me that you are mixing the various ways to use ReadDirectoryChangesW(), you do both specify the FILE_FLAG_OVERLAPPED flag when opening the directory and provide a pointer to the lpOverlapped parameter, meaning you want to wait on the event in the structure and handle the asynchronous I/O; and at the … Web如果 DoRead() 中的 ReadDirectoryChangesW 失败(结果将是没有回调)-我们需要直接调用回调 错误代码 为了停止,我们可以简单地关闭目录句柄-结果我们得到了 回调中 … Web我已经阅读了 ReadDirectoryChangesW() 的文档,还看到了 CDirectoryChangeWatcher project ,但都没有说明为什么人们想要异步调用它。 我知道 current 线程不会阻塞,但是,至少对于使用完成端口的 CDirectoryChangeWatcher 代码,当它调用 GetQueuedCompletionStatus() 时,that 无论如何线程 block (如果没有变化)。 cyclopithecus