Erasing by Using the InkOverlay Object
The InkOverlay object can be attached to a window control and is used to enable basic ink capability. You can use the InkOverlay object to erase ink by setting the EditingMode property equal to Delete. You can then set the EraserMode property to either the Stroke or Point members of InkOverlayEraserMode. Setting the EraserMode property to Stroke erases entire strokes. Setting the EraserMode property to Point erases the ink that the cursor passes over.