From the doc string for WeakReference:

class WeakReference:
     """A weak-reference object.  You construct a weak reference by passing
     any COM object you like.  If the object does not support weak
     refs, you will get a standard NS_NOINTERFACE exception.

     Once you have a weak-reference, you can "call" the object to get
     back a strong reference.  Eg:

     > >> some_ob = components.classes['...']
     > >> weak_ref = WeakReference(some_ob)
     > >> new_ob = weak_ref() # new_ob is effectively "some_ob" at this point
     > >> # EXCEPT: new_ob may be None if some_ob has already died - a
     > >> # weak reference does not keep the object alive (that is the point)

     You should never hold onto this resulting strong object for a long 
time,
     or else you defeat the purpose of the weak-reference.
     """


Tomeu Vizoso wrote:
>  Hi all,
>  
>  I need to pass a reference to a nsIWeakReference to
>  nsIWebBrowser.addWebBrowserListener(nsIWeakReference listener, nsIIDRef
>  IID).
>  
>  The only way I've found to do it is this:
>  
>  listener = xpcom.server.WrapObject(chrome, interfaces.nsIWebProgressListener)
>  weak_ref2 = xpcom.client.WeakReference(listener)
>  self.browser.addWebBrowserListener(weak_ref2._comobj_,
>                                     interfaces.nsIWebProgressListener)
>  
>  I guess weak_ref2._comobj_ is not the best way to get a nsIWeakReference.
>  
>  Any suggestion?
>  
>  Thanks,
>  
>  Tomeu
>  
>  _______________________________________________
>  pyxpcom mailing list
>  pyxpcom@[...].com
>  To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
_______________________________________________
pyxpcom mailing list
pyxpcom@[...].com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs