guictrlsetdata clears a combo list

[gcue]

i have a combo that has data and i would like to blank the current selection but not the entire list

i add to the combolist like this:

GUICtrlSetData($c_IP, GUICtrlRead($c_IP))

but after adding id like to clear the last entry and make ready for the next entry so id like to blank the current entry without deleting the list

i tried this but it clears the entire list:

GUICtrlSetData($c_IP, "")

[rasim]

Example:

#Include <GuiConstantsEx.au3>
#Include <GuiComboBox.au3>

$hGUI = GUICreate("Test", 200, 100)

$cCombobox = GUICtrlCreateCombo("", 11, 25, 180, 20)
GUICtrlSetData(-1, "One|Two|Three", "One")

$cButton_DelString = GUICtrlCreateButton("Delete", 60, 66, 75, 23)

GUISetState()

While 1
    $msg = GUIGetMsg()
    Switch $msg
        Case $GUI_EVENT_CLOSE
            ExitLoop
        Case $cButton_DelString
            _DelString($cCombobox)
    EndSwitch
WEnd

Func _DelString($cControl)
    Local $iIndex = _GUICtrlComboBox_GetCurSel($cCombobox)
    If $iIndex = -1 Then Return 0
    
    If _GUICtrlComboBox_DeleteString($cControl, $iIndex) <> -1 Then
        _GUICtrlComboBox_SetCurSel($cControl, 0)
        Return 1
    EndIf
EndFunc

[gcue]

thanks!