[pygtk] TreeModelFilter example?

[Don Allingham]

Is there an example of how to use the TreeModelFilter? It does not seem 
to work in the same manner as TreeModelSort.

   model = gtk.TreeModelFilter(mymodel)

will fail with a "NotImplementedError: gtk.TreeModelFilter is an 
abstract widget"

However, I can't seem to use it like a GenericTreeModel either, 
inheriting from this class.

I couldn't find anything on the FAQ, and a google search did not turn up 
anything.

Don



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