title: Forcing tkinter window to render below everything else with native Python
body: <p>I want to create a tkinter window that sits beneath all other windows and can't be interacted with using Window's <a href="https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-setwindowpos" rel="nofollow noreferrer"><code>SetWindowPos()</code></a> function. I would expect the following code to do the trick, but the window that appears is resizable, can accept focus, receives mouse clicks, and is not below everything else.</p>
  <pre><code>import time
  import ctypes.wintypes
  from ctypes import c_bool, c_int
  from ctypes.wintypes import HWND, UINT
  import tkinter
  
  # Create a window and get its HWND
  root = tkinter.Tk()
  hwnd = root.winfo_id()
  
  # Flags to move the window to the bottom and keep it from being touched
  SWP_NOSIZE          = 0x0001
  SWP_NOMOVE          = 0x0002
  SWP_NOACTIVATE      = 0x0010
  SWP_NOOWNERZORDER   = 0x0200
  SWP_NOSENDCHANGING  = 0x0400
  
  swpFlags = SWP_NOSIZE | SWP_NOMOVE | SWP_NOACTIVATE | SWP_NOOWNERZORDER | SWP_NOSENDCHANGING
  
  SetWindowPos = ctypes.windll.user32.SetWindowPos
  SetWindowPos.argtypes = [HWND, HWND, c_int, c_int, c_int, c_int, UINT]
  SetWindowPos.restype = c_bool
  
  HWND_BOTTOM = 1
  
  root.update()
  SetWindowPos(hwnd, HWND_BOTTOM, 0, 0, 400, 600, swpFlags)
  
  while True:
      time.sleep(0.1)
      root.update_idletasks()
      root.update()
  </code></pre>