问PySimpleGUI如何制作透明的点击窗口？

EN

import PySimpleGUI as sg
layout = [      
    [sg.Canvas(size=(100, 100), key= 'canvas',)],      
    [sg.T('Change circle color to:'), sg.Button('Red'), sg.Button('Blue')]      
    ]      

window = sg.Window('Sample window', layout,
               keep_on_top=True,
               auto_size_buttons=False,
               grab_anywhere=False,
               no_titlebar=True,
               return_keyboard_events=False,
               alpha_channel=0.8,
               use_default_focus=False,
               transparent_color='red',
               finalize=True)      
window.Finalize()      

canvas = window['canvas']     
cir = canvas.TKCanvas.create_oval(50, 50, 100, 100)      

while True:      
    event, values = window.read()      
    if event is None:      
        break      
    if event == 'Blue':      
        canvas.TKCanvas.itemconfig(cir, fill="Blue")      
    elif event == 'Red': 
        #Here is where the cirle changes to a recolor making it transparent and click through
        canvas.TKCanvas.itemconfig(cir, fill="Red")

layout = [[sg.Button("Button) ],
    [sg.Graph(canvas_size =(400,100),
    graph_bottom_left=(-400,-400),
    graph_top_right=(400,400),
    background_color='red') ]]

window = sg.Window('Click through transparent',
  layout,background_color='red',keep_on_top=True,
  transparent_color='red', alpha_channel=.5,
  grab_anywhere=True, resizable=True).Finalize()

while True:
    event, values = window.Read()
    if event == sg.WIN_CLOSED:
        break 
    if event == 'Click':
        print(" Button Clicked")