I am trying to list items in a TreeView control using the following code. #include <GUIConstantsEx.au3> #include <GuiTreeView.au3> #include <WindowsConstants.au3> #include <array.au3> local $gui010 = guicreate('TreeView Test') local $aSZE = wingetclientsize($gui010) local $TV010 = guictrlcreatetreeview(0,0,$aSZE[0],$aSZE[1]-40) local $btn010 = guictrlcreatebutton('Generate Treeview Debug Data To Console',20,$aSZE[1]-30,$aSZE[0]-40) local $x,$y ; just for handle ho