Need help enabling post thumbnails for a custom post type in my plugin

[Otto]

This seems simpler to me:

 $thumbs = get_theme_support( 'post-thumbnails' );
if ($thumbs === false) $thumbs = array ();
if (is_array($thumbs)) {
  $thumbs[] = 'slice';
  add_theme_support( 'post-thumbnails', $thumbs);
} 
  

You'd want to hook this to after_setup_theme.

Edit: Okay, so get_theme_support is a 3.1 thing, possibly.

[JLeuze]

Even less code, better yet!

Thanks Otto, I'll look into updating this for 3.1.