Hey ! I was wondering if you can do something like GUICtrlSetResizing() on a ListView (or other control) created with an UDF. example code : #include <GUIConstants.au3> #include <GuiListView.au3> $Gui = GUICreate("Gui", 500, 500, 100, 100, BitOr($GUI_SS_DEFAULT_GUI, $WS_MAXIMIZEBOX, $WS_SIZEBOX)) $List = _GUICtrlListView_Create($Gui, "Name|Location", 10, 10, 480, 480) _GUICtrlListView_SetExtendedListViewStyle($List, $LVS_EX_FULLROWSELECT) GUISetState() While 1 $Msg = GUI