Always display Resizing Grips

Hi.

I am using BoxAnnotation in my project. When IsEditable attribute is set to true, there are four resizing grips available on the corners of the box.

The problem is that these grips are only visible when we click on the BoxAnnotation. I couldn’t find any available property to permanently display those resizing grips.

You can view this behavior in the Interaction With Annotations example.

Looking forward to a solution.
Thanks.