Selecting and laying out elements (automation)

[Michael Barker]

Hi,

I have an Add-In which currently adds some elements to a diagram.  I would like to be able to select these elements and lay them out using the automation interface.

I have looked at the documentation on the Diagram.SelectedObjects collection it states

and add elements to the collection by passing the Object ID as a name to select them.

 Is there some sample code for this?  What is "Object ID" is it the instance id of the Diagram Object or something else.  There doesn't appear to be a field of ObjectID on any of the relevant classes.

How do I call the "Layout Selected Objects" functionality?

Regards,
Michael Barker.