This is probably a pretty newbie question, but can anyone point me towards creating some code to right click on a tree item and add a pop-up menu so I can prompt for some input and create a new child of that node? I figured out how to change the contents of the tree in UITheme exampleBasicControls by creating a Dictionary with some child Dictionaries containing some objects, but now I seem to have a few challenges: 1. The items are not being highlighted when I click on them (they aren't in the example either). 2. I need a nudge in the right direction to capture the right click. 3. If I do that and successfully add a new child to a node, I don't know how to tell the tree to refresh itself... Thank you, Rob