Returns a glib.list.List of all the gtk.tree_view_column.TreeViewColumns currently in tree_view. The returned list must be freed with g_list_free ().
A list of gtk.tree_view_column.TreeViewColumns
Deprecated: Use gtk.list_view.ListView or gtk.column_view.ColumnView instead
Returns a glib.list.List of all the gtk.tree_view_column.TreeViewColumns currently in tree_view. The returned list must be freed with g_list_free ().