For https://stackoverflow.com/questions/30982920/setlayeredwindowattributes-fails-on-windows-10-but-not-on-8

SO.py

import ctypes
from ctypes import wintypes
 
#imports
GetWindowLong=ctypes.windll.user32.GetWindowLongW
SetWindowLong=ctypes.windll.user32.SetWindowLongW
SetLayeredWindowAttributes=ctypes.windll.user32.SetLayeredWindowAttributes
GetShell=ctypes.windll.user32.GetShellWindow
EnumChildren = ctypes.windll.user32.EnumChildWindows
EnumWindows=ctypes.windll.user32.EnumWindows
GetWindowText = ctypes.windll.user32.GetWindowTextW
IsWindowVisible = ctypes.windll.user32.IsWindowVisible
GetWindowTextLength = ctypes.windll.user32.GetWindowTextLengthW
GetClassName=ctypes.windll.user32.GetClassNameW
EnumWindowsProc = ctypes.WINFUNCTYPE(ctypes.c_bool, ctypes.POINTER(ctypes.c_int),
												  ctypes.POINTER(ctypes.c_int))
 
#handy class for all my functions
class Main:
	def __init__(self):
		self.all=[]
		self.allnames=[]
		self.titles=[]
		shell=GetShell()
		self.EnumWindows = ctypes.windll.user32.EnumWindows
		self.EnumWindowsProc = ctypes.WINFUNCTYPE(ctypes.c_bool, ctypes.POINTER(ctypes.c_int),
												  ctypes.POINTER(ctypes.c_int))
 
		self.titles = []
		self.all = []
		self.allnames = []
	def GetHandles(self):
		self.EnumWindows(self.EnumWindowsProc(self.GetHWND), 0)
		for item in self.titles:
			EnumChildren(item, self.EnumWindowsProc(self.GetHWND), 0)
		self.EnumWindows(self.EnumWindowsProc(self.GetHWND), 0)
		return self.titles
 
	def GetHWND(self, hwnd, lParam):
		if IsWindowVisible(hwnd):
			length = GetWindowTextLength(hwnd)
			buff = ctypes.create_unicode_buffer(length + 1)
			GetWindowText(hwnd, buff, length + 1)
			self.titles.append(hwnd)
			
		return True
	def classname(self,handle):
		class_name = (ctypes.c_wchar * 257)()
		GetClassName(handle, ctypes.byref(class_name), 256)
		return class_name.value
 
if __name__=="__main__":
	m=Main()
	hwnds= m.GetHandles()
	for h in hwnds:
			if m.classname(h)==u"WorkerW":
				SetWindowLong(h, -20, GetWindowLong(h, -20))
				SetLayeredWindowAttributes(h,0,0,0x00000002)