[Maza Faka]

FlatX007
Откуда вы "взяли" библиотеку GuiList.au3?
Пример:

Код:

#include <GuiConstantsEx.au3>
#include <GuiListBox.au3>

Dim $sData = "String 1|String 2|String 3|String 4"

$hGUI = GUICreate("Listbox strings delete demo", 300, 200)

$cListBox = GUICtrlCreateList("", 10, 10, 280, 146)
GUICtrlSetData($cListBox, $sData)

$cButton_Delete = GUICtrlCreateButton("Clear", 11, 166, 75, 23)

GUISetState(@SW_SHOW)

While 1
    $msg = GUIGetMsg()
    Switch $msg
        Case $GUI_EVENT_CLOSE
            Exit
        Case $cButton_Delete
            _GUICtrlListBox_DeleteAll($cListBox)
    EndSwitch
WEnd

Func _GUICtrlListBox_DeleteAll($cControl)
    Local $iCount = _GUICtrlListBox_GetCount($cControl)
    If $iCount = -1 Then Return 0

    Local $i

    For $i = $iCount - 1 To 0 Step -1
        _GUICtrlListBox_DeleteString($cControl, $i)
    Next

    Return 1
EndFunc

переименовали в _GUICtrlListBox_ResetContent() »

Слона-то я и не приметил