For a HELP_EVENT, this is the position within the object
(stored in ARG below) where the help was found. */
/* In WindowsNT, for a mouse wheel event, this is the delta. */
For a HELP_EVENT, this is the position within the object
(stored in ARG below) where the help was found. */
/* In WindowsNT, for a mouse wheel event, this is the delta. */