The latest build of this product (v2019.1 build 0683) was released 2 months ago,
which was before this thread was created.

I would like to perform a custom action on mouse double click on a ShellItem. The ShellTreeListBox uses the default ItemTemplate and default ItemAdapter. I listen on the MouseDoubleClick event of the ShellTreeListBox but how can I ensure that the double click was done while the cursor was above a ShellItem and not for example on the scrollbar or else where?