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我试图使用 child_window() func 来获取父节点下的元素但未找到错误。这是父级的 print_control_identifier() 输出：

>>> txb_custom.print_control_identifiers()
Control Identifiers:

Custom - ''    (L997, T127, R1075, B177)
['PET WBCustom', 'Custom']
child_window(auto_id="textBox", control_type="Custom")
   | 
   | Edit - 'PET WB'    (L997, T127, R1075, B177)
   | ['Edit', 'PET WBEdit']
   | child_window(title="PET WB", auto_id="textBox", control_type="Edit")
   |    | 
   |    | ScrollBar - ''    (L0, T0, R0, B0)
   |    | ['ScrollBar', 'ScrollBar0', 'ScrollBar1']
   |    | child_window(auto_id="VerticalScrollBar", control_type="ScrollBar")
   |    | 
   |    | ScrollBar - ''    (L0, T0, R0, B0)
   |    | ['ScrollBar2']
   |    | child_window(auto_id="HorizontalScrollBar", control_type="ScrollBar")
   | 
   | Static - 'PET WB'    (L997, T150, R1075, B177)
   | ['Static', 'PET WB', 'PET WBStatic']
   | child_window(title="PET WB", auto_id="textBlock", control_type="Text")

我运行以下代码来尝试更改编辑控件中的文本并得到错误：

>>> txb_custom.child_window(title="PET WB", auto_id="textBox", control_type="Edit").set_text("test")
Traceback (most recent call last):
  File "C:\Program Files\Python38\lib\site-packages\pywinauto\application.py", line 250, in __resolve_control
    ctrl = wait_until_passes(
  File "C:\Program Files\Python38\lib\site-packages\pywinauto\timings.py", line 458, in wait_until_passes
    raise err
pywinauto.timings.TimeoutError

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<pyshell#81>", line 1, in <module>
    txb_custom.child_window(title="PET WB", auto_id="textBox", control_type="Edit").set_text("test")
  File "C:\Program Files\Python38\lib\site-packages\pywinauto\application.py", line 379, in __getattribute__
    ctrls = self.__resolve_control(self.criteria)
  File "C:\Program Files\Python38\lib\site-packages\pywinauto\application.py", line 261, in __resolve_control
    raise e.original_exception
  File "C:\Program Files\Python38\lib\site-packages\pywinauto\timings.py", line 436, in wait_until_passes
    func_val = func(*args, **kwargs)
  File "C:\Program Files\Python38\lib\site-packages\pywinauto\application.py", line 222, in __get_ctrl
    ctrl = self.backend.generic_wrapper_class(findwindows.find_element(**ctrl_criteria))
  File "C:\Program Files\Python38\lib\site-packages\pywinauto\findwindows.py", line 87, in find_element
    raise ElementNotFoundError(kwargs)
pywinauto.findwindows.ElementNotFoundError: {'title': 'PET WB', 'auto_id': 'textBox', 'control_type': 'Edit', 'top_level_only': False, 'parent': <uia_element_info.UIAElementInfo - '', TextBoxWithEllipsis, None>, 'backend': 'uia'}
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