The BE Subpages Widget plugin, it displays a listing of the current section’s subpages. By default it sorts them by menu order, but the code below will change it to alphabetical order. Add this to your theme’s functions.php file or a core functionality plugin.
/**
* Alphabetically sort subpages
*
* @link http://www.billerickson.net/code/subpages-widget-alphabetical-order/
* @author Bill Erickson
*
* @param array $args, query arguments
* @return array $args
*/
function ea_alphabetically_sort_subpages( $args ) {
$args['sort_column'] = 'post_title';
$args['sort_order'] = 'ASC';
return $args;
}
add_filter( 'be_subpages_widget_args', 'ea_alphabetically_sort_subpages' );