public unsafe static extern bool ReadDirectoryChangesW(
SafeFileHandle hDirectory,
void *lpBuffer,
uint nBufferLength,
bool bWatchSubtree,
FileNotifyChange dwNotifyFilter,
out uint lpBytesReturned,
ref OVERLAPPED lpOverlapped,
FileIOCompletionRoutine lpCompletionRoutine);
/// <summary>
/// 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. The function does not report
/// changes to the specified directory itself.
/// This 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
/// </summary>
/// <param name="lpPathName">The path of the directory to be watched</param>
/// <param name="bWatchSubtree">If this parameter is true, the function monitors the directory tree rooted at the specified directory;
/// if it is false, it monitors only the specified directory</param>
/// <param name="dwNotifyFilter">The filter conditions that satisfy a change notification wait</param>
/// <returns>If the function succeeds, the return value is a handle to a find change notification object</returns>
public static IntPtr FindFirstChangeNotification([In] string lpPathName, bool bWatchSubtree,
FileNotifyChange dwNotifyFilter)
{
return Environment.OSVersion.Platform >= PlatformID.Win32NT ? Native.FindFirstChangeNotificationW(lpPathName, bWatchSubtree, dwNotifyFilter) : Native.FindFirstChangeNotificationA(lpPathName, bWatchSubtree, dwNotifyFilter);
}
public static extern IntPtr FindFirstChangeNotificationW(
[In] [MarshalAs(UnmanagedType.LPWStr)] string lpPathName,
[MarshalAs(UnmanagedType.Bool)] bool bWatchSubtree, FileNotifyChange dwNotifyFilter);
/// <summary>
/// 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. The function does not report
/// changes to the specified directory itself.
/// This 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
/// </summary>
/// <param name="lpPathName">The path of the directory to be watched</param>
/// <param name="bWatchSubtree">If this parameter is true, the function monitors the directory tree rooted at the specified directory;
/// if it is false, it monitors only the specified directory</param>
/// <param name="dwNotifyFilter">The filter conditions that satisfy a change notification wait</param>
/// <returns>If the function succeeds, the return value is a handle to a find change notification object</returns>
public static IntPtr FindFirstChangeNotification([In] string lpPathName, bool bWatchSubtree,
FileNotifyChange dwNotifyFilter)
{
return(Environment.OSVersion.Platform >= PlatformID.Win32NT ? Native.FindFirstChangeNotificationW(lpPathName, bWatchSubtree, dwNotifyFilter) : Native.FindFirstChangeNotificationA(lpPathName, bWatchSubtree, dwNotifyFilter));
}
public static extern IntPtr FindFirstChangeNotificationW(
[In][MarshalAs(UnmanagedType.LPWStr)] string lpPathName,
[MarshalAs(UnmanagedType.Bool)] bool bWatchSubtree, FileNotifyChange dwNotifyFilter);
