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1. mrwweb
   Member
   Posted 4 months ago #

   Is there a hook(s) I can use to append theme-specific help text to certain WordPress fields (probably in my functions.php, but maybe in a plugin file).

   For example, I might want to tell users that featured images look best when they are PNGs with transparent backgrounds.

   It just occurred to I could register an admin style that does this:
   

   #postimagediv .inside:after {
       content: "For best results, use PNG images with transparent backgrounds.";
       font-style: italic;
       color: #555;
   }

   But!
   1) That's a horrifically-inappropriate use of CSS and just generally hack-y.
   2) It depends on the admin markup just about never changing. That's probably a bad assumption.

   It would probably just as easy to do this with jQuery but [see the above two points replacing "CSS" with "jQuery"].

   I've googled but gotten nowhere on this one. Any help, ideas, or tips would be appreciated.

2. Ian Dunn
   Member
   Posted 4 months ago #

   Have you looked into the new Pointers feature yet? That may be what you're looking for.

   There's also an admin_post_thumbnail_html filter that's called inside _wp_post_thumbnail_html(), so you could do something like this:

   function addFeaturedImageNote( $content )
   {
   	return $content . '<p>Tip: Featured images look best when they are PNGs with transparent backgrounds.</p>';
   }
   add_filter( 'admin_post_thumbnail_html', 'addFeaturedImageNote' );

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