trigger open

Interactive trigger that handles processing to open a tree node so that its subordinate items are shown in the list view of a Tree widget.

trigger open
   string control : in ; TREE | LIST
   string item : in

; <Your code here>

end ; trigger open
Applies to: Form widgets: utree (Tree)
Activation: Activated when the user double-clicks a tree or list item.
Default behavior: None
Behavior upon completion: None


  • control—input control used by the user; one of:
    • TREE—user clicked in the tree view
    • LIST—user clicked in the list view
  • item—value of the selected tree node