Hello:
I have a problem understanding PyGtk and couldn't find anything in the
documentation (presumably because I searched in all the wrong places). I
don't understand how exactly one can tell PyGtk that a new class
implements some GInterface.
Specifically I have a tree model which works very fine and it subclassed
like this:
class TopicsTreeModel(gtk.GenericTreeModel):
# implementation goes here
Now I would like to add drag and drop functionality, which (for the role
as a D&D source) requires my new class to implement gtk.TreeDragSource.
Perhaps the most pythonic way of doing this would be to inherit from
gtk.TreeDragSource like this:
class TopicsTreeModel(gtk.GenericTreeModel, gtk.TreeDragSource):
# implementation goes here
However, that raises an error:
File "<stdin>", line 15, in ?
TypeError: multiple bases have instance lay-out conflict
Is there something I don't understand about the PyGtk implementation of
GInterfaces? Any help or reference to the appropriate part of the
documentation would be greatly appreciated.
Yours,
Oliver
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