deref-pointer
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Name

deref-pointer — Deferences a pointer. Macro

Syntax

	  deref-pointer ptr type => value

Arguments and Values

ptr

A pointer to a foreign object.

type

A foreign type of the object being pointed to.

value

The value of the object where the pointer points.

Description

Returns the object to which a pointer points.

Examples

(let ((intp (allocate-foreign-object :int)))
  (setf (deref-pointer intp :int) 10)
  (prog1
    (deref-pointer intp :int)
    (free-foreign-object intp)))
=> 10

Notes

The TYPE argument is ignored for CL implementations other than AllegroCL. If you want to cast a pointer to another type use WITH-CAST-POINTER together with DEREF-POINTER/DEREF-ARRAY.

Side Effects

None.

Affected by

None.

Exceptional Situations

None.

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