One issue with this is that it always focuses the treeview. If the entry was focused, it will change the focus to the treeview. I think the entry may be more useful, because even if the treeview focus is wanted, the user can just press the down key. To do that, this lookup works: ``` gtk_widget_grab_focus(ui_lookup_widget(main_widgets.window, "entry_tagfilter")); ```