Hi Randy,

>Do nodes have helpcontextid's or whatsthishelpid's? If not, how can I tell if the user is in whatsthismode when they click on a node?
>

AFAIK, nodes do not have helpcontextid or whatsthishelpid properties. You may be able to add some code to the WhatsThisMode method of the form on which the treeview resides to set a custom property that you can check when the treeview is clicked on.

HTH
Brian