title: Obtaining a handle or UIA ID of Explorer's scrollbar place-marker
body: <p>If you have a folder sorted by a certain column, and then you click and drag the vertical scrollbar, Explorer will display a little helper rectangle showing where in the sort list you currently are.  This is what I'm talking about:</p>
  <p><a href="https://i.stack.imgur.com/KqgS4.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/KqgS4.png" alt="enter image description here" /></a></p>
  <p>I was wondering if anyone knew how to obtain a handle or UIAutomation ID of that little rectangle (if one exists).  So far I've been trying with Spy++ and Inspect, but I can't seem to figure it out (in part because the rectangle is fleeting and disappears as soon as you lift the mouse button).  Thank you for any response or guidance.</p>