ReadDirectoryChangesW not notifying when moving the files - winapi

Question

I’m new to this windows API. I’m a GUI developer in my project i need to monitor a particular folder . I have followed every steps in the Windows API using ReadDirectoryChangeW but ReadDirectoryChangeW is not notifying me when the file is moved to other directory (cut/paste or delete to move to trash).at least it should notify as FILE_ACTION_RENAMED
It is windows 7 and ReadDirectorChangeW is working on normal copy,paset,shift+delete,rename
this code is written in Qt c++ where QString is char *
this is my code
#include <windows.h>
#include <Winbase.h>
#include <stdlib.h>
#include <stdio.h>
#include <tchar.h>
#include <qDebug>
#include <QThread>
#define MAX_DIRS 200
#define MAX_FILES 255
#define MAX_BUFFER 4096
#if 0
extern "C" {
WINBASEAPI BOOL WINAPI
ReadDirectoryChangesW( HANDLE hDirectory,
LPVOID lpBuffer, DWORD nBufferLength,
BOOL bWatchSubtree, DWORD dwNotifyFilter,
LPDWORD lpBytesReturned,
LPOVERLAPPED lpOverlapped,
LPOVERLAPPED_COMPLETION_ROUTINE lpCompletionRoutine
);
}
#endif
class WatcherThread : public QThread
{
Q_OBJECT
public:
WatcherThread(LPCWSTR dir)
{
path = dir;
}
void run() Q_DECL_OVERRIDE {
QString newDirName;
char buf[2048];
DWORD nRet;
BOOL result=TRUE;
char filename[MAX_PATH];
//path = L"K:/Demo/bb";
wchar_t* arr = (wchar_t*)path;
printf("\nThe file directory: [%s] \n", path);
qDebug() << "WatchDirectory Watcher Path " << QString::fromWCharArray(arr);
DirInfo[0].hDir = CreateFile (path, GENERIC_READ|FILE_LIST_DIRECTORY,
FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE,
NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS,
NULL);
if(DirInfo[0].hDir == INVALID_HANDLE_VALUE)
{
qDebug() << "Can not open";
return;
}
lstrcpy( DirInfo[0].lpszDirName, path);
OVERLAPPED PollingOverlap;
FILE_NOTIFY_INFORMATION pNotify[1024];
int offset;
PollingOverlap.OffsetHigh = 0;
PollingOverlap.hEvent = CreateEvent(NULL,TRUE,FALSE,NULL);
while(result)
{
result = ReadDirectoryChangesW(
DirInfo[0].hDir,// handle to the directory to be watched
(LPVOID)&pNotify,// pointer to the buffer to receive the read results
sizeof(pNotify),// length of lpBuffer
1,// flag for monitoring directory or directory tree
FILE_NOTIFY_CHANGE_DIR_NAME | FILE_NOTIFY_CHANGE_LAST_WRITE | FILE_NOTIFY_CHANGE_FILE_NAME | FILE_NOTIFY_CHANGE_SIZE ,
&nRet,// number of bytes returned
&PollingOverlap,// pointer to structure needed for overlapped I/O
NULL);
WaitForSingleObject(PollingOverlap.hEvent,INFINITE);
// if(result)
// {
offset = 0;
int rename = 0;
char oldName[260];
char newName[260];
do
{
//pNotify = (FILE_NOTIFY_INFORMATION*)((char*)buf + offset);
strcpy(filename, "");
int filenamelen = WideCharToMultiByte(CP_ACP, 0, pNotify[offset].FileName, pNotify[offset].FileNameLength/2, filename, sizeof(filename), NULL, NULL);
//filename[pNotify->FileNameLength/2] = ' ';
switch(pNotify[offset].Action)
{
case FILE_ACTION_ADDED:
qDebug() << "The FILE_ACTION_ADDED***********" << QString(filename).left(filenamelen);
emit onFileCopy(QString(filename).left(filenamelen));
break;
case FILE_ACTION_MODIFIED:
qDebug() << "The FILE_ACTION_MODIFIED" << QString(filename).left(filenamelen);
break;
case FILE_ACTION_REMOVED:
qDebug() << "The FILE_ACTION_REMOVED" << QString(filename).left(filenamelen);
emit onFileRemove(QString(filename).left(filenamelen));
break;
case FILE_ACTION_RENAMED_OLD_NAME:
qDebug() << "The FILE_ACTION_RENAMED_OLD_NAME" << QString(filename).left(filenamelen);
break;
case FILE_ACTION_RENAMED_NEW_NAME:
newDirName = QString(filename).left(filenamelen);
qDebug() << "The FILE_ACTION_RENAMED_NEW_NAME" << newDirName;
emit onDirRename(newDirName);
break;
default:
printf("\nDefault error.\n");
break;
}
//qDebug() << "pNotify->NextEntryOffset" << pNotify[offset].NextEntryOffset <<" offset "<< offset << nRet ;
offset += pNotify[offset].NextEntryOffset;
}while(pNotify[offset].NextEntryOffset); //(offset != 0)
ResetEvent(PollingOverlap.hEvent);
}
CloseHandle( DirInfo[0].hDir );
}
public:
signals:
void onDirRename(QString Dir);
void onFileRemove(QString name);
void onFileCopy(QString name);
private:
LPCWSTR path;
typedef struct _DIRECTORY_INFO {
HANDLE hDir;
TCHAR lpszDirName[MAX_PATH];
CHAR lpBuffer[MAX_BUFFER];
DWORD dwBufLength;
OVERLAPPED Overlapped;
}DIRECTORY_INFO, *PDIRECTORY_INFO, *LPDIRECTORY_INFO;
DIRECTORY_INFO DirInfo[MAX_DIRS];
TCHAR FileList[MAX_FILES*MAX_PATH];
DWORD numDirs;
};
It is a Qt based object. the path is the directory i will monitor and update any changes happens.