admin_print_styles-widgets.php action-hook . WP 1.0

This action is documented in wp-admin/admin-header.php

Usage

add_action( 'admin_print_styles-widgets.php', 'action_function_name_2601' );
function action_function_name_2601(){
	// action...
}

Where the hook is called

do_action( 'admin_print_styles-widgets.php' );

Where the hook is used (in WP core)