Enables hit-testing and invoking the default behavior when the user clicks and drags the control point thumbs of this edit designer.
true to enable hit-testing and invoking the default behavior when the user clicks and drags the control point thumbs of this edit designer; otherwise, false. The default value is true.
Each edit designer uses one or more thumb control points that the user can click to perform the default behavior. For instance, the AnnRectangleEditDesigner shows thumbs on the corners to allow the user to click and drag to resize the object.
This default behavior occurs when the value of thumbsEnabled is true (the default value).
If instead, the thumbs should be shown but rendered in-active, then set the value of thumbsEnabled to false. This will render the thumbs on the screen when the object is selected, but they will not respond to user clicks. This enables drag-only operations on objects while still showing the objects are selected.