[Creat0R]

Не уверен что правильно понял, но вот что получилось:

Код:

#include <GUIConstantsEx.au3>
#include <ListBoxConstants.au3>

OnAutoItExitRegister("_OnExitProc")

Global $sConfig_File = @ScriptDir & "\Config.ini"
Global $aIniData = IniReadSection($sConfig_File, "Variables")

$hGUI = GUICreate("Test Script", 300, 200)

$nList = GUICtrlCreateList("", 20, 20, 260, 120, BitXOR($GUI_SS_DEFAULT_LIST, $LBS_SORT))
$nInput = GUICtrlCreateInput("", 20, 150, 200, 20)
$nSet_Button = GUICtrlCreateButton("Set", 225, 150, 55, 20)

For $i = 1 To UBound($aIniData)-1
    GUICtrlSetData($nList, $aIniData[$i][0])
Next

GUISetState(@SW_SHOW, $hGUI)

While 1
    Switch GUIGetMsg()
        Case $GUI_EVENT_CLOSE
            Exit
        Case $nList
            $sItem = GUICtrlRead($nList)

            For $i = 1 To UBound($aIniData)-1
                If $aIniData[$i][0] = $sItem Then
                    GUICtrlSetData($nInput, $aIniData[$i][1])
                    ExitLoop
                EndIf
            Next
        Case $nSet_Button
            $sItem = GUICtrlRead($nList)

            If $sItem = "" Then
                MsgBox(48, 'Attention', 'No selected item.', 0, $hGUI)
                ContinueLoop
            EndIf

            For $i = 1 To UBound($aIniData)-1
                If $aIniData[$i][0] = $sItem Then
                    $aIniData[$i][1] = GUICtrlRead($nInput)
                    ExitLoop
                EndIf
            Next
    EndSwitch
WEnd

Func _OnExitProc()
    IniWriteSection($sConfig_File, "Variables", $aIniData)
EndFunc