wp_maybe_load_widgets()

Determines if Widgets library should be loaded.

Description

Checks to make sure that the widgets library hasn’t already been loaded. If it hasn’t, then it will load the widgets library and run an action hook.

Source

File: wp-includes/functions.php 

function wp_maybe_load_widgets() {
	/**
	 * Filters whether to load the Widgets library.
	 *
	 * Passing a falsey value to the filter will effectively short-circuit
	 * the Widgets library from loading.
	 *
	 * @since WP-2.8.0
	 *
	 * @param bool $wp_maybe_load_widgets Whether to load the Widgets library.
	 *                                    Default true.
	 */
	if ( ! apply_filters( 'load_default_widgets', true ) ) {
		return;
	}

	require_once( ABSPATH . WPINC . '/default-widgets.php' );

	add_action( '_admin_menu', 'wp_widgets_add_menu' );
}

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Related

Uses

Uses
Uses Description
wp-includes/plugin.php: add_action()

Hooks a function on to a specific action.
wp-includes/plugin.php: apply_filters()

Call the functions added to a filter hook.
wp-includes/functions.php: load_default_widgets

Filters whether to load the Widgets library.

Changelog

Changelog
Version Description
WP-2.2.0 Introduced.