import re
import win32gui
import win32com.client
class WindowMgr:
 """Encapsulates calls to the winapi for window management
 Based on:
 - https://stackoverflow.com/questions/2090464/python-window-activation
 - https://stackoverflow.com/questions/14295337/win32gui-setactivewindow-error-the-specified-procedure-could-not-be-found
 """
 def __init__(self):
 self._handle = None
 @property
 def handle(self):
 return self._handle
 def _window_enum_callback(self, hwnd, wildcard):
 """Pass to win32gui.EnumWindows() to check all the opened windows"""
 if re.match(wildcard, str(win32gui.GetWindowText(hwnd))) is not None:
 self._handle = hwnd
 def find_window_wildcard(self, wildcard):
 """find a window whose title matches the wildcard regex"""
 self._handle = None
 win32gui.EnumWindows(self._window_enum_callback, wildcard)
 return self