get-var-pointer

Syntax

Arguments and Values

symbol

A symbol denoting a foreign variable defined with defcvar.

pointer

A foreign pointer.

Description

The function get-var-pointer will return a pointer to the foreign global variable symbol previously defined with defcvar.

Examples

    CFFI> (defcvar "errno" :int :read-only t)
    ⇒ *ERRNO*
    CFFI> *errno*
    ⇒ 25
    CFFI> (get-var-pointer '*errno*)
    ⇒ #<A Mac Pointer #xA0008130>
    CFFI> (mem-ref * :int)
    ⇒ 25

See Also

defcvar