Admin custom module not displaying in theoverlay How to show the data fetched from the database in the overlay of the admin custom module.
The data are retrieved but not showing in the overlay. Kindly help me out
There is Overlay Paths


  This is a simple module that enables site builders to use the built-in
  Overlay for non-admin pages.


Refer 

Working with the overlay

https://drupal.stackexchange.com/a/8265/4471