>Are you having any success with drag&drop within the Treeview control? I am trying to provide a way to rearrange items and am finding that most things work except that the target item is about two items below from the mouse cursor, even when I try to factor a two-line adjustment into the hittest calculations.
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>Most frustrating for the user to see the mouse in one place and the highlighted item trailing behind: which does he believe?
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>If you know the answer to this problem I'll be doubly in your debt.

Don't even have a clue - my TreeView is strictly read_only, and it never rearranges, so I didn't even try any of it. You may take a look at the NDragger class here in Files (don't get misguided with similar names - I'm not the author :).