The container control sends a WM_CONTROL (in Container Controls) message with the CN_HELP notification code to its owner whenever the container receives a WM_HELP message.

param1
     USHORT       id          /*  Container control ID. */
     USHORT       CN_HELP     /*  Notification code. */

param2
     PRECORDCORE  pRecord     /*  Pointer to the record that has the selection cursor. */