admin_bar_menu action-hook . WP 3.1.0

Load all necessary admin bar items.

This is the hook used to add, remove, or manipulate admin bar items.

add_action( 'admin_bar_menu', 'action_function_name_7211' );
function action_function_name_7211( $wp_admin_bar ){
	// action...
}

Since 3.1.0

Introduced.

admin_bar_menu

do_action_ref_array( 'admin_bar_menu', array( &$wp_admin_bar ) );

add_action( 'admin_bar_menu', 'wp_admin_bar_my_account_menu', 0 );

add_action( 'admin_bar_menu', 'wp_admin_bar_search_menu', 4 );

add_action( 'admin_bar_menu', 'wp_admin_bar_my_account_item', 7 );

add_action( 'admin_bar_menu', 'wp_admin_bar_recovery_mode_menu', 8 );

add_action( 'admin_bar_menu', 'wp_admin_bar_sidebar_toggle', 0 );

add_action( 'admin_bar_menu', 'wp_admin_bar_wp_menu', 10 );

add_action( 'admin_bar_menu', 'wp_admin_bar_my_sites_menu', 20 );

add_action( 'admin_bar_menu', 'wp_admin_bar_site_menu', 30 );

add_action( 'admin_bar_menu', 'wp_admin_bar_customize_menu', 40 );

add_action( 'admin_bar_menu', 'wp_admin_bar_updates_menu', 50 );

add_action( 'admin_bar_menu', 'wp_admin_bar_comments_menu', 60 );

add_action( 'admin_bar_menu', 'wp_admin_bar_new_content_menu', 70 );

add_action( 'admin_bar_menu', 'wp_admin_bar_edit_menu', 80 );

add_action( 'admin_bar_menu', 'wp_admin_bar_add_secondary_groups', 200 );