EndInteraction

  void
  TCanvasSelectionInteractor::EndInteraction ()
  {
      if ( fRectSelecting ) {
          bool shifted = GetModifierKeys().IsShiftKeyDown();
          if ( !shifted ) fSelection->DeselectAllGraphics ();
          TCanvasFrontToBackFilter filter;
          TGRect bounds (GetFirstPoint(), GetLastPoint());
          bounds.OrderPoints ();
          TCanvasRectSelectionFunnel funnel (bounds, *fSelection, shifted);
          fCanvasView->EnumerateGraphics (filter, funnel);
          fCanvasView->AdoptCurrentSelection (::CopyPointer(fSelection));
          }
      else { 
          unsigned long n = GetNumberOfPoints ();
          if ( n >= 2 ) {
              fCommand->SetOffset (GetPoint(n-1)-GetPoint(n-2));
              DoIncrement (*(fBinding.GetObject()));
              }
          AdoptAndDoEnd (fBinding.OrphanObject());
          fBinding = NIL;
      }
  }