Ticket #18408: 18408.php

<?php

add_action( 'add_meta_boxes', 'myplugin_add_custom_box' );

function myplugin_add_custom_box() {
        add_meta_box(
                'myplugin_sectionid',
                __( 'My Post Section Title', 'myplugin_textdomain' ),
                'myplugin_inner_custom_box',
                'post',
                'side'
        );
}

function myplugin_inner_custom_box() {
        global $post;
        $a = new WP_Query('post_type=page');
        while($a->have_posts() ) : $a->the_post();
        endwhile;
        wp_reset_postdata();
        the_title();
}