C++/CLI: FileSystemWatcher move or copy non empty folder - c++

Question

I'am working with the FileSystemWatcher in C++/CLI. I'am having trouble with moving or copying a non empty folder: When copy a folder with one .txt file in it to the watching folder, then multiple createdand changed events are raised, that's fine, but when I move the same folder, only one single create event for the folder is raised. The problem is, that I need to know witch files are in it, so my idea was to just create a loop in the changed event that recursively searches trough the folder. This works for moving, but when I copy the folder, every event is raised twice.
I can't find an algorithm, so that only one create event for folders and files is raised.
Thanks for your help.
Code:
System::Void SnowDrive::Cloud::FileWatcher_Changed(System::Object^ sender, System::IO::FileSystemEventArgs^ e)
{
size_l FileSize;
string ServerInode,
FileName = c.marshal_as<std::string> (e -> Name),
FilePath = c.marshal_as<std::string> (e -> FullPath),
FtpPath = ToFtpPath (FilePath.substr (0, FilePath.find_last_of ("\\")));
if (FileName.find_last_of ("\\") != string::npos)
FileName = FileName.substr (FileName.find_last_of ("\\") + 1);
for (unsigned int i = 0; i < IgnoreFileList.size (); i++)
{
if (IgnoreFileList[i] == FilePath)
{
IgnoreFileList.erase (IgnoreFileList.begin () + i);
return;
}
}
if (!FileSystem::IsDir (FilePath))
{
FileSystem::FileSize (FilePath, &FileSize);
if (FileSize != 0)
IgnoreFileList.push_back (FilePath); // ignore twice changed events
// do something
}
else
{
if (sender -> ToString () != " ")
return;
DIR * Dir;
dirent * FindData;
if((Dir = opendir(FilePath.c_str ())) == NULL)
return;
while ((FindData = readdir(Dir)) != NULL)
{
FileName = FindData -> d_name;
if (FileName == string (".") || FileName == string (".."))
continue;
FileWatcher_Changed (gcnew String (" "), gcnew IO::FileSystemEventArgs (IO::WatcherChangeTypes::Created, gcnew String (FilePath.c_str ()), gcnew String (FileName.c_str ())));
}
}
}
System::Void SnowDrive::Cloud::FileWatcher_Created(System::Object^ sender, System::IO::FileSystemEventArgs^ e)
{
size_l FileSize;
string FilePath = c.marshal_as<std::string> (e -> FullPath);
if (!FileSystem::IsDir (FilePath))
{
FileSystem::FileSize (FilePath, &FileSize);
if (FileSize != 0)
IgnoreFileList.push_back (FilePath); // ignore twice changed events
}
FileWatcher_Changed (gcnew String (" "), e);
}

Answer 1

I don't know of a way to get only one Changed event like you want. I do, however, know how to get events for the moved files. You'll want to attach to the Renamed event.
Folder copy with files: One Changed event for the folder, and one per file.
Folder move with files: One Changed event for the folder, one Renamed event per file.