How to connect to a treeview object in a different application?

Hi experts,

How can I connect to  an existing treeview in a different application ( MS Business Solutions Navision Client 4.0)?

The Navision-Client has an Outlook-2003 style menu witch is an treeview object.
I need to get the treeview root node to obtain the submenu, the user has selected.

All I have, is the window handle of the treeview object.

Is there something like GetObject wHnd as treeview???

Thanks for help.

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