problem with ZwQueryDirectoryFile

[Lionel]

at a certain point it returns STATUS_PENDING,i can retry the call
but it still continues returning that error,forever

i always set to NULL the second parameter,that is supposed to be an OPTIONAL HANDLE to an Event

// hDir is a valid handle to a directory,obtained via CreateFile with
// FILE_FLAG_BACKUP_SEMANTICS
// pNames is a buffer,and uBufSize its size

int ret = NtQueryDirectoryFile(hDir,NULL,NULL,NULL,&IO,pNames,uBufSize,FileNamesInformation,FALSE,NULL,TRUE);

perhaps i have to pass a non-NULL value as the second
parameter, which is an handle to an event,
and then wait for it to happen...but how i create it?

[nvoigt]

You can create your own event HANDLE using CreateEvent. You can then pass it to your function and wait for the event to be signalled with WaitForSingleObject.

Pseudo Code:

HANDLE hEvent = CreateEvent( ... );

int ret = NtQueryDirectoryFile(hDir,hEvent,NULL,NULL,&IO,pNa mes,uBufSize,FileNamesInformation,FALSE,NULL,TRUE) ;

WaitForSingleObject( hEvent, INFINITE );