On 27/09/11 17:52, Andrea Zagli wrote: > can i have a GtkTreeView based on GtkTreeModelFilter based on a > GtkTreeModelSort? > > i tried but when i click on a column header i get "invalid cast from > `GtkTreeModelFilter' to `GtkTreeSortable'" > > thanks in advance If you want the TreeView to be sortable, the GtkTreeView's model must implement GtkTreeSortable. GtkTreeModelFilter doesn't, GtkTreeModelSort does - you have to swap the two. Give the GtkTreeView a GtkTreeModelSort wrapping a GtkTreeModelFilter (which in turn can wrap your actual data) Thomas
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