sidebar_admin_setup action-hook . WP 2.2.0

Fires early before the Widgets administration screen loads, after scripts are enqueued.

Usage

add_action( 'sidebar_admin_setup', 'action_function_name_3177' );
function action_function_name_3177(){
	// action...
}

Where the hook is called

do_action( 'sidebar_admin_setup' );

do_action( 'sidebar_admin_setup' );

do_action( 'sidebar_admin_setup' );

do_action( 'sidebar_admin_setup' );

do_action( 'sidebar_admin_setup' );

Where the hook is used (in WP core)