Package: cffi

Function foreign-slot-offset

Lambda List

foreign-slot-offset (type slot-name)

Arguments

type -- A foreign struct type.
slot-name -- A symbol.
offset -- An integer.

Details

The function foreign-slot-offset returns the offset in bytes of a slot in a foreign struct type.

Examples 
  (defcstruct timeval
    (tv-secs :long)
    (tv-usecs :long))


  CFFI> (foreign-slot-offset 'timeval 'tv-secs)
  => 0
  CFFI> (foreign-slot-offset 'timeval 'tv-usecs)
  => 4
 

See also

defcstruct
foreign-slot-names
foreign-slot-pointer
foreign-slot-value