title: Barcode scan using Input as Return key
body: <p>Is it possible to use input in PySimpleGUI to behave like a button event?</p>
  <p>I would like to read a scancod (44 characters) in Input, after the automatic reception enters (Return Key), and add this code to a listbox.
  I was looking for a documentation, but I can't adapt myself
  '' 'window = sg.Window(&quot;Keyboard Test&quot;, layout, return_keyboard_events = True, use_default_focus = False)' ''
  Give me an example, please.
  Thanks</p>