PySimpleGUI how to make transparent click-through window? - python-3.x

Question

I want to draw a circle on the screen but it should be click-through and I should be able to click somethings behind in this circle. So far, I achieved to draw circle and made it transparent but i couldn't make it click-through. I know that it is possible with pywin32 win32con.WS_EX_LAYERED flag but there is no information about this on PySimpleGUI documentation. How can I solve this problem?
My current window configuration:
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)
If it is not possible with PySimpleGUI, is it possible to do with pywin32 module combination?

Answer 1

The transparent_color property can be used to create "click-through" windows. All you need to do is make whatever you want to be click through the same color as the transparent_color. Here is an example where you can toggle the transparency of a shape in a canvas to the transparent color and make it click through.
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")

Answer 2

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")
Remember to put keep_on_top = True
This works well on windows, don't know if other os