How do i add custom post types to this query?

Question

I'm using the code below to display the latest post from a certain category but i am using Custom Post Types and I don't know how to insert the custom post type function into this code.

I want to get the latest post from a certain category, from each post type.

So how do i add that to the code below.

<?php
$queryObject = new  Wp_Query( 'posts_per_page=1&cat=23' );
// The Loop!
if ($queryObject->have_posts()) {
?>

<?php
while ($queryObject->have_posts()){
    $queryObject->the_post();
    ?>

<a href="<?php the_permalink(); ?>" title="<?php printf(__( 'Read %s', 'wpbx' ), wp_specialchars(get_the_title(), 1)) ?>">
                    <?php the_post_thumbnail('video-post');     ?>
                    </a>
     <a href="<?php the_permalink(); ?>"><?php the_title(); ?></a>




<?php
}
?>
<?php wp_reset_postdata();
}
?>

Answer 1

showposts is replaced with posts_per_page (see Pagination Parameters). Also orderby value is invalid (see Order & Orderby Parameters).

$queryObject = new  Wp_Query( 'posts_per_page=1&cat=23' );