Returns the index of the currently active item.
If the model is a non-flat treemodel, and the active item is not an immediate child of the root of the tree, this function returns gtk_tree_path_get_indices (path)[0], where path is the gtk.tree_path.TreePath of the active item.
An integer which is the index of the currently active item, or -1 if there’s no active item
Deprecated: Use gtk.drop_down.DropDown
Returns the index of the currently active item.
If the model is a non-flat treemodel, and the active item is not an immediate child of the root of the tree, this function returns gtk_tree_path_get_indices (path)[0], where path is the gtk.tree_path.TreePath of the active item.