如何控制tkinter app的亮度？

from tkinter import *
from tkinter import ttk

root = Tk()
root.title("控制亮度")

brightness_scale = ttk.Scale(root, from_=0, to=100, orient=HORIZONTAL)
brightness_scale.pack()

def change_brightness(value):
    # 在这里实现控制亮度的逻辑
    pass

brightness_scale.configure(command=change_brightness)

import pyautogui

def change_brightness(value):
    brightness = int(value)
    pyautogui.PAUSE = 0.01
    pyautogui.press('brightness_down')  # 模拟按下亮度减少的按键
    for _ in range(brightness):
        pyautogui.press('brightness_up')  # 模拟按下亮度增加的按键

root.mainloop()