Pyqt5 App select TabItem causes exception (ValueError: NULL COM pointer access) after few seconds

[shaoerkuai]

Expected Behavior

The tab be selected

Actual Behavior

COM Null Pointer Error occured

NULL COM pointer access
ValueError: NULL COM pointer access

During handling of the above exception, another exception occurred:

  File "D:\autoscript\src\testClass.py", line 117, in check_window_switch_to_batch_tab
    v.select(1)
  File "D:\autoScript\src\main.py", line 40, in <module>
    z.check_window_switch_to_batch_tab()
pywinauto.uia_defines.NoPatternInterfaceError: 

Steps to Reproduce the Problem

Here is the printed id tree:

   |    |    |    |    | child_window(title="批量检测", control_type="Tab")  # The Tab container
   |    |    |    |    |    | child_window(title="单台检测", control_type="TabItem") # Item 1
   |    |    |    |    |    | child_window(title="批量检测", control_type="TabItem") # Item 2

Short Example of Code to Demonstrate the Problem

        v = self._check_window.child_window(title="批量检测",control_type="Tab")  # This is the tab
        v.select(1) # Select the second tab

If I just print v.texts() and it will print ['单台检测','批量检测'] it seems that be OK.

Specifications

• Pywinauto version: 0.6.8
• Python version and bitness: 3.8.6
• Platform and OS: Windows 10

[shaoerkuai]

Using click_input() works, but I would run some tests at the same time, not a well solution, any opinions?

[shaoerkuai]

I found using inspect.exe action menu Invoke.invoke also works.

Using child_window(...).invoke() to emulate a 'click' rather than click_input () works like a charm.