Patch looks good (but like you I have no previous experience with this code 
and no idea how to test it).

Just one thing:
> +    while (!m_objectHandles.isEmpty())
> +        delete m_objectHandles.takeFirst();

Please use qDeleteAll(m_objectHandles), simpler and faster.

-- 
David Faure, faure@kde.org, sponsored by Trolltech to work on KDE,
Konqueror (http://www.konqueror.org), and KOffice (http://www.koffice.org).
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