def-c-typedef

$Revision: 5.0.2.4 $

Macro

Package: FOREIGN-FUNCTIONS

Arguments: (name &rest slots)

This macro is obsolete and kept for backward compatibility only. Please use def-foreign-type.

This macro returns name if name is a symbol or (car name) if name is a list but this macro is used for its side effects. The side effect is to define a C type to Lisp. (The list of allowable types is the same as given in the definition of ff:def-c-type above. It includes structures and unions as well as ordinary types.) However, unlike the related macro ff:def-c-type, no accessor functions and no constructor functions are defined. You cannot even use ff:make-cstruct to create an object of the defined type. The purpose of ff:def-c-typedef is to provide building blocks which will be used by ff:def-c-type (which does create accessors and a constructor as side effects) without paying the overhead of defining the additional functions. ff:def-c-typedef takes the same arguments as ff:def-c-type. (If the name argument is a list, only the first element, which must be a symbol, is used. A list is accepted for compatibility with ff:def-c-type.)

See the discussion of the allowable values for data-type in the definition of ff:def-c-type for the allowable values.

See foreign_functions.htm for general information on foreign functions in Allegro CL. See ftype.htm for information on foreign types.

The general documentation description is in introduction.htm. The index is in index.htm.