Как скопировать текст в буфер с сохранённой позицией текста?

#include <GUIConstantsEx.au3>
#Include <WinAPIEx.au3>
#include <GUIEdit.au3>

$GUI = GUICreate("", 200, 100)
GUISetState(@SW_SHOW, $GUI)

$forma1 = GUICtrlCreateEdit("", 10, 10, 20, 30, $ES_WANTRETURN)
$forma2 = GUICtrlCreateEdit("", 10, 50, 20, 30, $ES_WANTRETURN)
$button = GUICtrlCreateButton('в буфер', 50, 40, 50, 15)

While 1
    Switch GUIGetMsg()
		Case $GUI_EVENT_CLOSE
			Exit
		Case $button
			; тут не знаю как
	EndSwitch
WEnd

Case $button
            $text1 = GUICtrlRead($forma1)
            $text2 = GUICtrlRead($forma2)
            $str = $text1 & @CRLF & $text2
            ClipPut($str)
            Run("notepad.exe")
            WinWaitActive("[class:Notepad]")
            ControlSend("[class:Notepad]", "", "Edit1", "+{ins}")