如何在python中使用Power Setting GUID并在python中获取监控和显示的状态

在Python中使用Power Setting GUID并获取监控和显示状态的方法如下：

导入所需的模块：

import ctypes
from ctypes import wintypes

定义所需的常量和结构体：

GUID_MONITOR_POWER_ON = ctypes.wintypes.GUID('{02731015-4510-4526-99E6-E5A17EBD1AEA}')
GUID_CONSOLE_DISPLAY_STATE = ctypes.wintypes.GUID('{6fe69556-704a-47a0-8f24-c28d936fda47}')

class SYSTEM_POWER_STATUS(ctypes.Structure):
    _fields_ = [
        ('ACLineStatus', wintypes.BYTE),
        ('BatteryFlag', wintypes.BYTE),
        ('BatteryLifePercent', wintypes.BYTE),
        ('Reserved1', wintypes.BYTE),
        ('BatteryLifeTime', wintypes.DWORD),
        ('BatteryFullLifeTime', wintypes.DWORD),
    ]

定义获取电源状态的函数：

def get_power_status():
    power_status = SYSTEM_POWER_STATUS()
    ctypes.windll.kernel32.GetSystemPowerStatus(ctypes.byref(power_status))
    return power_status

定义获取显示状态的函数：

def get_display_state():
    display_state = wintypes.DWORD()
    ctypes.windll.user32.PowerGetActiveScheme(None, ctypes.byref(display_state))
    return display_state

定义设置显示状态的函数：

def set_display_state(state):
    ctypes.windll.user32.PowerSetActiveScheme(None, ctypes.byref(state))

定义获取电源设置GUID的函数：

def get_power_setting_guid():
    power_setting_guid = ctypes.wintypes.GUID()
    ctypes.windll.powrprof.PowerGetActiveScheme(None, ctypes.byref(power_setting_guid))
    return power_setting_guid

定义获取电源设置的函数：

def get_power_setting(setting_guid):
    value = wintypes.DWORD()
    buffer_size = ctypes.c_ulong(ctypes.sizeof(value))
    ctypes.windll.powrprof.PowerReadACValueIndex(None, ctypes.byref(setting_guid), None, ctypes.byref(value))
    return value

定义设置电源设置的函数：

def set_power_setting(setting_guid, value):
    ctypes.windll.powrprof.PowerWriteACValueIndex(None, ctypes.byref(setting_guid), None, ctypes.byref(value))

使用上述函数可以实现在Python中获取和设置电源和显示状态。例如，获取电源状态和显示状态的示例代码如下：

if __name__ == '__main__':
    power_status = get_power_status()
    print('ACLineStatus:', power_status.ACLineStatus)
    print('BatteryFlag:', power_status.BatteryFlag)
    print('BatteryLifePercent:', power_status.BatteryLifePercent)
    print('BatteryLifeTime:', power_status.BatteryLifeTime)
    print('BatteryFullLifeTime:', power_status.BatteryFullLifeTime)

    display_state = get_display_state()
    print('Display State:', display_state)

注意：上述代码仅适用于Windows操作系统。在其他操作系统上，可能需要使用不同的API来实现相同的功能。