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""" 

MS Windows-specific helper for the TkAgg backend. 

 

With rcParams['tk.window_focus'] default of False, it is 

effectively disabled. 

 

It uses a tiny C++ extension module to access MS Win functions. 

""" 

from __future__ import (absolute_import, division, print_function, 

unicode_literals) 

 

import six 

 

from matplotlib import rcParams 

 

try: 

if not rcParams['tk.window_focus']: 

raise ImportError 

from matplotlib._windowing import GetForegroundWindow, SetForegroundWindow 

except ImportError: 

def GetForegroundWindow(): 

return 0 

def SetForegroundWindow(hwnd): 

pass 

 

class FocusManager(object): 

def __init__(self): 

self._shellWindow = GetForegroundWindow() 

 

def __del__(self): 

SetForegroundWindow(self._shellWindow)