[pygtk] selection transfer confirmation and property notify events

[Xavier Toth]

I'm trying to figure out when selection client actually got the data.
The ICCCM manual says that the selection owner "should express
interest in PropertyNotify events for the specified requestor window
and wait until the property in the SelectionNotify event has been
deleted." I have an handler for the selection-request-event in which I
receive the requestor window and property name but is there a way to
connect a callback to this window to know when the property is
deleted?

Ted