用于注销按钮的策略更改的GUI自动化。 pywinauto.findwindows.ElementNotFoundError：错误。如何切换上下文？

Question

我正在自动执行更改注销按钮策略的步骤。涉及的步骤是：

1. 使用gpedit.msc打开本地组策略

2. 从左窗格的“用户配置”>“管理模板”中的下拉列表中选择“开始菜单和任务栏”

3. 在右窗格中，双击“更改开始菜单电源按钮”

4. 选择单选按钮“已启用”

5. 从选项的下拉菜单中：选择“注销”

我已经完成了第三步，但是从第二步映射“更改开始菜单电源按钮”时遇到了问题。我的代码如下：

from pywinauto import Application

Application().start(r'mmc gpedit.msc') 
app = Application(backend="uia").connect(path='mmc.exe')
#app.LocalGroupPolicyEditor.dump_tree()

Admin_template = app.LocalGroupPolicyEditor.child_window(title="User 
Configuration", control_type="TreeItem").child_window(title="Administrative 
Templates", control_type="TreeItem") # since there are same templates 
Admin_template.double_click_input() # it expands the subtree
#Admin_template.dump_tree()

Start_menu = Admin_template.child_window(title="Start Menu and Taskbar", 
control_type="TreeItem").double_click_input()
Start_menu.dump_tree()
#Admin_template.child_window(title="Start Menu and Taskbar", 
control_type="TreeItem").dump_tree()

#Change_start_menu = Start_menu.child_window(title="Change Start Menu power 
#button", control_type="MenuItem").double_click_input()
#Change_start_menu.dump_tree()

在查找和映射右窗格中的元素时遇到麻烦。另外，当我使用Start_menu.dump_tree()时，仅显示“ Notification”元素。但是，剩下的，包括“更改开始菜单电源按钮”，就是我接下来要双击的内容。

感谢您的帮助。谢谢。

Answer 1

有点棘手，但这应该可以完成工作（它完成了您列出的所有步骤-按OK-并关闭程序）：

import pywinauto

pywinauto.Application().start(r'mmc gpedit.msc') 
app = pywinauto.Application(backend="uia").connect(path='mmc.exe')

admin_template = app.LocalGroupPolicyEditor.child_window(title="User Configuration", control_type="TreeItem").child_window(title="Administrative Templates", control_type="TreeItem")
admin_template.double_click_input()

start_menu = admin_template.child_window(title="Start Menu and Taskbar", control_type="TreeItem")
start_menu.double_click_input()

option_list = app.LocalGroupPolicyEditor.child_window(auto_id="12786", control_type="List")

# Just select any of the first options to change the focus to the list.
first_elem = option_list.child_window(title="Add Search Internet link to Start Menu", control_type="ListItem")
first_elem.click_input()

# Used to scroll down the window so that the wanted option becomes visible.
pywinauto.keyboard.send_keys("cccc")

option = option_list.child_window(title="Change Start Menu power button", control_type="ListItem")
option.double_click_input()

pop_up = app.LocalGroupPolicyEditor.child_window(auto_id="tableLayoutFullForm", control_type="Pane")

radio = pop_up.child_window(title="Enabled", auto_id="radioButtonEnabled", control_type="RadioButton")
radio.click_input()

drop_down = pop_up.child_window(title="Choose one of the following actions", auto_id="dropDownListChoose one of the following actions", control_type="ComboBox")
drop_down.click_input()

# 'Hack' to first select the Restart option and then the next option after that which starts with l (=Log off).
# This ensures that the correct setting gets set despite of what the setting was before.
pywinauto.keyboard.send_keys("rl{ENTER}")

ok = pop_up.child_window(title="OK", auto_id="buttonOK", control_type="Button")
ok.click_input()

app.kill()

确保以管理员身份运行此脚本，否则它将失败。

随时询问您是否对代码有任何疑问：）

编辑：

如果您正在运行pywinauto <0.6.0版本，则必须将pywinauto.keyboard.send_keys()的两次出现（第19和34行）替换为：

pywinauto.SendKeysCtypes.SendKeys()

如果这不起作用，您可以尝试：

pywinauto.keyboard.SendKeys()