title: python window access error
body: <p>my goal is get list item of the application
  i use pywinauto module</p>
  
  <pre><code>import pywinauto
  pwa_app = pywinauto.application.Application()
  w_handle = pywinauto.findwindows.find_windows(class_name='#32770')
  window = pwa_app.window_(handle=w_handle[0])
  lv = window.Children()[3]
  lv.GetItem(1)
  </code></pre>
  
  <p>this is error</p>
  
  <pre><code>Traceback (most recent call last):
    File "C:\Users\gunhee\Desktop\getlistview.py", line 7, in &lt;module&gt;
      lv.GetItem(1)
    File "C:\Python27\lib\site-packages\pywinauto\controls\common_controls.py", line 354, in GetItem
      remote_mem = _RemoteMemoryBlock(self)
    File "C:\Python27\lib\site-packages\pywinauto\controls\common_controls.py", line 86, in __init__
      raise ctypes.WinError()
  WindowsError: [Error 5] access denied
  </code></pre>
  
  <p>i'm administrator of my windows 8.</p>
  
  <p>please help me</p>