I am trying to access this list of checkboxes in an Autodesk Revit dialog with UI Automation. But when I look at the dialog with Inspect and UISpy, the list or checkboxes are not shown. There is an "Add selection to:" pane and the scrollbars that scroll the checkbox list, but not the checkbox list. Is there any way to access these controls?
Is the list dynamically populated? If so can you try to set an Automation ID for the controls and check. I had similar issue with a custom controller and it works that way.