[qt.py] [PySide] Process sometimes hangs when exiting app

[cztomczak]

Problem occurs on both Windows and Mac in the qt.py example running with PySide 1.2. Process hangs when quitting app. This needs further debugging to figure out what call is causing the issue - whether it is cef.Shutdown.

Issue on Windows reported on the Forum ("python.exe" has stopped working):
https://groups.google.com/d/topic/cefpython/PPPqWlRGx-8/discussion

[raphaelm]

self.setAttribute(Qt.WA_DeleteOnClose, True) in the __init__ method of the window seems to help

[cztomczak]

@raphaelm That makes sense when you take into consideration comment in the qt.py example which says that "app" object must be destroyed before calling cef.Shutdown. So windows objects should be destroyed as well.

[cztomczak]

Fixed in PR #409.