class_docstr: A read-only combobox with extra annotation, and a context menu.
  
  Mostly the same interface as wx.ComboBox, but choices is a list of (Name,
  Parent, modulenum).
code: def get_choice_label(choice):
      name, module_name, module_num, is_input_module = choice[:4]
      if module_name:
          if is_input_module:
              return "(from %s)" % module_name
          return "(from %s #%02d)" % (module_name, module_num)
      return ""
  
imports: import platform
  import wx
label_desc: Use image node_id 5 for calling the NameSubscriberComboBox obj's underlying member method code with example usage: obj.get_choice_label(choice) and returns: str, unknown, unknown