The cancel tracker.
[Visual Basic 6.0] Property CancelTracker As ITrackCancel
[Visual Basic .NET]
Public WriteOnly Property CancelTracker
[C#] public void CancelTracker {set;}
[Java] public ITrackCancel setrefCancelTracker() throws IOException, AutomationException
[C++] HRESULT putref_CancelTracker( ITrackCancel* );