clickthrough + keypassthrough transparency

transparency_trick.py

import pygame
import win32gui
import win32con
import win32api

pygame.init()

# Set up the display (fullscreen for this example)
screen_info = pygame.display.Info()
width, height = screen_info.current_w, screen_info.current_h
screen = pygame.display.set_mode((width, height), pygame.NOFRAME)
pygame.display.set_caption("Transparent Window")

# Get the window handle
hwnd = pygame.display.get_wm_info()["window"]

# Set the window to layered and transparent
win32gui.SetWindowLong(hwnd, win32con.GWL_EXSTYLE,
                       win32gui.GetWindowLong(hwnd, win32con.GWL_EXSTYLE) | win32con.WS_EX_LAYERED)

# Set white (255, 255, 255) as the transparent color
win32gui.SetLayeredWindowAttributes(hwnd, win32api.RGB(255, 255, 255), 0, win32con.LWA_COLORKEY)

# Make the window topmost (optional, but often useful for this kind of application)
win32gui.SetWindowPos(hwnd, win32con.HWND_TOPMOST, 0, 0, 0, 0, 
                      win32con.SWP_NOMOVE | win32con.SWP_NOSIZE)

# Your main game loop would go here
# ...

# In your drawing code, use screen.fill((255, 255, 255)) to create transparent areas