#include <GUIConstantsEx.au3>
#include <EditConstants.au3>

$hGUI = GUICreate("Enter SDAT Number", 275, 50)

$hInput = GUICtrlCreateInput("", 10, 10, 250, 20, $ES_NUMBER)

GUISetState()

While 1
    Switch GUIGetMsg()
        Case $GUI_EVENT_CLOSE
            Exit
    EndSwitch
WEnd