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Re: sizeof

In various postings Robby Findler asks about the lisp equivalent
of the c sizeof function.

Here's the example used:
> (make-record :ColorTable :storage :Handle 
>             :length (+ (sizeof :ColorTable)
>                        (* num-colors (sizeof :ColorSpec))))

The "record-length" function is the lisp replacement of the
c sizeof function.

For examples:
    (record-length :TPrint)
returns the size of the :tPrint record or 120.

The following creates a handle to a tPrint record:
      (setq view-print-record (require-trap #_NewHandle :errchk (record-length