On Thu, Dec 31, 2009 at 02:08:03AM -0500, Vikram Noel Ambrose wrote: > - Filter Method 2. > Using the "visible column" approach it becomes possible, but not very > plausible. > > One can call gtk_tree_model_foreach() and walk through all the > G_TYPE_BOOLEAN fields of the corresponding rows and mark them TRUE/FALSE > and look up parents of nodes (like C1) and mark them TRUE even if they > did no match the search criteria. However looking up parents > continuously like this takes a massive performance hit when you have > large stores. I don't know if there is a better way at Gtk+ level, but if you keep the number of visible children the performance hit should be relatively small. You still need to walk up the tree when a child changes, but that should be just a handful of lookups/updates, and you never have to scan a subtree to see if there's anything visible in it. Yeti _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list
