C#

public bool OpenLine()
{
    UInt32 dwDevNum = 0;//count the devices
    UInt32 dwApiVerSion = TAPI_CURRENT_VERSION;
    LINEINITIALIZEEXPARAMS dtParams = new LINEINITIALIZEEXPARAMS();
    dtParams.dwTotalSize = (UInt32)Marshal.SizeOf(dtParams);
    dtParams.dwOptions = 1;
    IntPtr handles = new IntPtr(0);

    IntPtr hInstance = IntPtr.Zero;//new IntPtr(GetModuleHandle(new IntPtr(0)).ToInt32());
    unsafe
    {
        fixed(IntPtr *hLineApp = &m_hLineApp)
        {
            long lResult = lineInitializeEx(hLineApp, hInstance, new IntPtr(0), new IntPtr(0),
                new IntPtr(&dwDevNum), new IntPtr(&dwApiVerSion), new IntPtr(&dtParams));
            if (lResult == 0)
            {
                return true;
            }
        }
        return false;
    }
}
[StructLayout(LayoutKind.Sequential)]
private struct LINEINITIALIZEEXPARAMS
{
    public uint dwTotalSize;
    public uint dwNeededSize;
    public uint dwUsedSize;
    public uint dwOptions;
    public IntPtr hMultiUse;
    public uint dwCompletionKey;
}
[DllImport("coredll.dll", SetLastError = true)]
unsafe private static extern uint lineInitializeEx(
    IntPtr *lphLineApp,
    IntPtr hInstance,
    IntPtr pfnCallback,//lineCallbackFunc lpfnCallback,
    IntPtr FriendAppName,//StringBuilder lpszFriendlyAppName,
    IntPtr pNumDevs,//out uint lpdwNumDevs,
    IntPtr pAPIVersion,//out uint lpdwAPIVersion,
    IntPtr pLineInitializeExParams);//ref LINEINITIALIZEEXPARAMS lpLineInitializeExParams);

srng.net wrote:

Could you please guide me regarding any possible reason for the same?

srng.net wrote:

My point of view, This can not be becasue of third party tool. Reason : Again we can look into the StackTrace where the exception is raised by System.Windows.forms.dll and third party tool is just passing comand to WM_ExitSizeMove and leaving the handle to windows.

Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments)

string folderPath = Path.Combine(
    Environment.GetFolderPath(Environment.SpecialFolder.ProgramFiles), "MyFolder");

ndkit wrote:

Window XP

ndkit wrote:

VisualStudio 2003

public SendItem()
{
  Add request to queue
  Send a new data signal (Perhaps a System.Threading.EventWaitHandle)
}

private Throttle()  (Running on background thread)
{
  Loop indefinitely
  {
    If queue is empty
       Wait for signal
    Else
    {
       Process item from queue
       Wait X milliseconds
    }
  }
}

public void AddImageRequestToQueue(string isbn)
{
    Contract.Requires(!string.IsNullOrEmpty(isbn));

    lock (_queuePadLock)
    {
        _imageRequests.Enqueue(isbn);
    }
}

private void ProcessImageQueue()
{
    do
    {
        if (_imageRequests.Count > 0)
        {
            string isbn = string.Empty;
            lock (_queuePadLock)
            {
                isbn = _imageRequests.Dequeue();
            }

            IImageResult imageResult = GetImage(isbn, ImageSize.Small);

            OnProcessImageCompleted(new ProcessImageCompletedEventArgs(imageResult.Image, imageResult.ISBN));

            Thread.Sleep(SleepTime);
        }
    }
    while (true);
}