On Fri, 2005-11-25 at 16:12 +0000, Duncan Coutts wrote: > All, > > Language bindings want to be able to implement the GtkTreeModel > interface. Unfortunately this is rather hard without causing a space > leak. > > The issue is that to implement a the GtkTreeModel interface you must > fill in GtkTreeIter structures. These are typically stack allocated and > do not need to be explicitly freed. As a consequence it is not possible > to track resources that are referenced by GtkTreeIters.
The simplest fix for this is to to use iters that don't reference
resources - put 1-3 integers into the iterator instead of a pointer.
It's easy to see how to do this for a flat model. A little trickier
for a tree, but there are various possibilities ...
(You may have to omit GTK_TREE_MODEL_ITERS_PERSIST - this will cause
some performance degradation, but things will still work.)
Regards,
Owen
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