wp-wide-widget.php

<?php

class Wide_Widget extends WP_Widget {
	public function __construct() {
		$id_base = 'wide';
		$name = __( 'So Wide');
		$widget_options = array(
			'description' => __( 'Behold my size!' ),
		);
		$control_options = array(
			'width' => 600,
			'height' => 500,
		);
		parent::__construct( $id_base, $name, $widget_options, $control_options );
	}
	/* ... */
}