学步园

unsigned __stdcall MonitorFileChangeThread(void *pVoid);

int main(int argc, char* argv[])
{

    HANDLE hDirectory = CreateFile("E://", GENERIC_READ,
        FILE_SHARE_READ|FILE_SHARE_WRITE|FILE_SHARE_DELETE, NULL,   
        OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS|FILE_FLAG_OVERLAPPED, NULL);

    HANDLE hThread = (HANDLE)_beginthreadex(NULL, 0, MonitorFileChangeThread, (void*)hDirectory, 0, NULL);
   
    Sleep(5*1000);

    CloseHandle(hDirectory);
    WaitForSingleObject(hThread, INFINITE);

    return 0;
}

unsigned __stdcall MonitorFileChangeThread(void *pVoid)
{
#define BUF_SIZE    64*1024

    DWORD size;
    char buf[BUF_SIZE];
    HANDLE hDirectory = (HANDLE)pVoid;

    while(1)
    {
        if(!ReadDirectoryChangesW(hDirectory, buf, BUF_SIZE, TRUE,
            FILE_NOTIFY_CHANGE_FILE_NAME|FILE_NOTIFY_CHANGE_ATTRIBUTES|FILE_NOTIFY_CHANGE_SIZE,
            &size, NULL, NULL) || GetLastError() == ERROR_INVALID_HANDLE)
        {
            break;
        }

        PFILE_NOTIFY_INFORMATION pFNI = (PFILE_NOTIFY_INFORMATION)buf;

        do
        {
            pFNI = (PFILE_NOTIFY_INFORMATION)pFNI->NextEntryOffset;
        }
        while(pFNI != 0);
    }

    return 0;
}