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Under program control is there an easy way to move a slider (thumb) to the top or bottom? I am aware of Melba23's GUIScrollbars_Ex UDF (https://www.autoitscript.com/forum/topic/113723-scrollbars-made-easy-bugfix-version-2-may-21/) but I believe it's overkill for my simple needs. In a listview with a vertical scrollbar when the window is active one can hit Ctrl+Home to move the scrollbar slider (thumb) to the top and Ctrl+End to the bottom. One can also right click the slider and choose Scroll Here, Top, Bottom, Page UP, Page Down, Scroll Up, and Scroll Down. I must be doing something basically wrong but am stuck. Move the thumb to the middle before clicking the Top button to test the code below (Bottom is not coded). I've commented out other trys. try #3 is a strange fail. Any comments on what I'm missing greatly appreciated as I'm stuck #AutoIt3Wrapper_run_debug_mode=Y #include <Debug.au3> #include <GUIConstantsEx.au3> #include <GuiListView.au3> #include <GuiScrollBars.au3> AutoItSetOption("MustDeclareVars", 1) ;v1b - cut out extraneous code Example() Exit Func Example() Local $i, $j, $x, $hGUI, $idListView, $bTop, $bBottom $hGUI = GUICreate("Scrollbar Question", 300, 400) ;get handle in case we need it later $idListView = GUICtrlCreateListView("Col 0", 10, 10, 280, 300) $bTop = GUICtrlCreateButton("Top", 10, 350, 60, 25) $bBottom = GUICtrlCreateButton("Bottom", 120, 350, 60, 25) ;Pause("$hGUI = '" & $hGUI &"'"& @CRLF & "$idListView = '" & $idListView &"'") For $i = 1 to 100 _GUICtrlListView_AddItem($idListView, $i) Next GUISetState(@SW_SHOW) While 1 Switch GUIGetMsg() Case $GUI_EVENT_CLOSE ExitLoop Case $bTop ;drag thumb to middle of scrollbar before clicking Top button ;try #1 - FAILS Opt("WinTitleMatchMode", 2) ;2 = Match any substring in the title $x = WinActivate("Scrollbar Question") ;not $idListview but main GUI $hGUI - neither working If $x <> $hGUI Then Pause("WinActivate FAILED") Send("^{HOME}") ;Ctrl+home ;try#2 - FAILS ;~ $x = WinActivate($hGUI) ;try Main GUI ;~ If $x <> $hGUI Then Pause("WinActivate FAILED") ;~ Send("^{HOME}") ;Ctrl+home ;try#3 - strange FAILS ;~ $x = WinActivate($idListview) ;try $idListview ;~ If $x <> $idListview Then Pause("WinActivate FAILED") ;strange it works BUT if I comment out this line it fails ;~ ;Sleep(1000) ;it's not a time delay issue ;~ Send("^{HOME}") ;Ctrl+home ;try#4 - same strange fail as #3 ;~ $x = WinActivate($idListview) ;try $idListview ;~ If $x <> $idListview Then Pause("WinActivate FAILED") ;~ Send("{UP 100}") ;try#5 - what the heck is going on? same strange fail as #3 ;$x = WinActivate($idListview) ;try $idListview ;~ $x = WinActivate($hGUI) ;try Main GUI ;~ If $x <> $idListview Then Pause("WinActivate FAILED") ;~ MouseWheel($MOUSE_WHEEL_UP, 100) ;_GUIScrollBars_ScrollWindow($hGUI, 0, 100) ;NO - moves the ListView window in the $hGUI ;_GUIScrollBars_ScrollWindow($idListview, 0, 100) ;does not seem to work ;_GUIScrollBars_SetScrollInfoPos($hGUI, $SB_VERT, 30) ;does not work ;_GUIScrollBars_SetScrollInfoPos($idListview, $SB_VERT, 30) ;does not work ;I'm doing something very basic wrong. I need help. Pause("Scrollbar thumb should be at Top") Case $bBottom Pause("In: Case $bBottom") Pause("Scroll bar should be at BOttom") EndSwitch WEnd GUIDelete($idListView) EndFunc ;Func Example() Func Pause($text="") MsgBox(262144, "DEBUG", "Paused: " & $text) EndFunc