Dear dmfzw,
My apologies for the delay. I got it how to make this using custom post types. This link was much useful I would say. Open your functions.php file and then place the code below within:
add_shortcode( 'getchildposts', 'getchildposts_func');
function getchildposts_func($atts){
extract( shortcode_atts( array(
'type' => '',
), $atts ) );
?>
<?php
query_posts('&post_type='.$type.'&post_parent=0');?>
<ul>
<?php while(have_posts()):the_post(); ?>
<li>
<?php the_title(); ?>
<?php
$pageChildren = get_pages('child_of='.get_the_ID());
?>
<?php
if ( $pageChildren ) {
echo('<ul>');
foreach ( $pageChildren as $pageChild ) {
echo('<li>'.$pageChild->post_title.'</li>');
}
echo('</ul>');
}
?>
</li>
<?php endwhile;?>
</ul>
<?php wp_reset_query(); ?>
<?php
}
This code will create a custom shortcode and it needs be used like this [getchildposts type="page"] where page is your custom post type, you can use for any CPT.
Hope it help you.
Please let me know if you are satisfied with my answer and if I can help you with any other questions you might have.