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POpython, COM and multithreading issue
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  1. POpython, COM and multithreading issue
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    copied!<p>I'm trying to take a look at IE's DOM from a separate thread that dispatched IE, and for some properties I'm getting a "no such interface supported" error. I managed to reduce the problem to this script:</p> <pre class="lang-python prettyprint-override"><code>import threading, time import pythoncom from win32com.client import Dispatch, gencache gencache.EnsureModule('{3050F1C5-98B5-11CF-BB82-00AA00BDCE0B}', 0, 4, 0) # MSHTML def main(): pythoncom.CoInitializeEx(0) ie = Dispatch('InternetExplorer.Application') ie.Visible = True ie.Navigate('http://www.Rhodia-ecommerce.com/') while ie.Busy: time.sleep(1) def printframes(): pythoncom.CoInitializeEx(0) document = ie.Document frames = document.getElementsByTagName(u'frame') for frame in frames: obj = frame.contentWindow thr = threading.Thread(target=printframes) thr.start() thr.join() if __name__ == '__main__': thr = threading.Thread(target=main) thr.start() thr.join() </code></pre> <p>Everything is fine until the <code>frame.contentWindow</code>. Then bam:</p> <pre><code>Exception in thread Thread-2: Traceback (most recent call last): File "C:\python22\lib\threading.py", line 414, in __bootstrap self.run() File "C:\python22\lib\threading.py", line 402, in run apply(self.__target, self.__args, self.__kwargs) File "testie.py", line 42, in printframes obj = frame.contentWindow File "C:\python22\lib\site-packages\win32com\client\__init__.py", line 455, in __getattr__ return self._ApplyTypes_(*args) File "C:\python22\lib\site-packages\win32com\client\__init__.py", line 446, in _ApplyTypes_ return self._get_good_object_( com_error: (-2147467262, 'No such interface supported', None, None) </code></pre> <p>Any hint ?</p>
 

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