ComboBox Item_texts Issue when using MS UI Automation API

When Win32 API is used, the item texts of the ComboBox can be retrieved successfully with the function ComboBox.item_texts().

But when MS UI Automation API is used, the actual item texts fail to return, but a blank value and “open” are got. When print control identifiers, there are two sub controls under the ComboBox. One is Edit, and the other is Down Button. Is it a bug of MS UI Automation API for ComboBox? Here is the identifiers info>

Pane - 'GCSS'    (L382, T99, R985, B630)
['GCSSPane', 'GCSS', 'Pane']
child_window(title="GCSS", control_type="Pane")
   | 
   | Dialog - 'Select User Profile'    (L494, T280, R873, B448)
   | ['Dialog', 'Select User Profile', 'Select User ProfileDialog']
   | child_window(title="Select User Profile", control_type="Window")
   |    | 
   |    | Edit - ''    (L583, T324, R855, B337)
   |    | ['', 'Edit', '0', '1', 'Edit0', 'Edit1']
   |    | child_window(auto_id="50001", control_type="Edit")
   |    | 
   |    | ComboBox - ''    (L583, T349, R855, B373)
   |    | ['2', 'ComboBox', 'ComboBoxClose']
   |    | child_window(auto_id="50002", control_type="ComboBox")
   |    |    | 
   |    |    | Edit - ''    (L586, T352, R835, B370)
   |    |    | ['3', 'Edit2']
   |    |    | child_window(auto_id="1001", control_type="Edit")
   |    |    | 
   |    |    | Button - 'Open'    (L839, T350, R854, B372)
   |    |    | ['Open', 'OpenButton', 'Button', 'Button0', 'Button1']
   |    |    | child_window(title="Open", auto_id="DropDown", control_type="Button")

[jduncan8142]

Tried the uia backend but now I’m getting the below error:

Traceback (most recent call last):
  File "C:\Users\JN26633\Downloads\lp_test1.py", line 67, in <module>
    cf1.select("DeliveryNumber")
  File "C:\Python27\lib\site-packages\pywinauto\controls\uia_controls.py", line 158, in select
    self.expand()
  File "C:\Python27\lib\site-packages\pywinauto\controls\uiawrapper.py", line 527, in expand
    self.iface_expand_collapse.Expand()
  File "C:\Python27\lib\site-packages\pywinauto\controls\uiawrapper.py", line 132, in __get__
    value = self.fget(obj)
  File "C:\Python27\lib\site-packages\pywinauto\controls\uiawrapper.py", line 210, in iface_expand_collapse
    return uia_defs.get_elem_interface(elem, "ExpandCollapse")
  File "C:\Python27\lib\site-packages\pywinauto\uia_defines.py", line 234, in get_elem_interface
    raise NoPatternInterfaceError()
NoPatternInterfaceError

There is for sure a DeliveryNumber entry in the combobox but still the only control that works is texts()

cf1.children() gives:

[<uiawrapper.UIAWrapper - ‘Open’, SplitButton, 3527539>, <uia_controls.ListViewWrapper - ‘’, ListBox, 3527539>]

Tried the ListView controls and was unable to get much from it and couldn’t get anything from the SplitButton.

[airelil]

From a quick glance, it seems that you use the default win32 backend. Did you consider trying ‘uia’ ?

app = Application(backend='uia').connect(path=lp_file_path)