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From: mithomas@bsu-cs.bsu.edu (Michael Thomas Niehaus)
Newsgroups: comp.sys.mac.programmer
Subject: Think C 4.0 questions
Message-ID: <10682@bsu-cs.bsu.edu>
Date: 1 Feb 90 13:37:41 GMT
Organization: CS Dept, Ball St U, Muncie, Indiana
Lines: 31

I have several questions that I hope someone out there can answer:

1.  If you declare an array in an object class definition, is it safe to
    use that array in a call to, say, an FSWrite routine?  I have created
    a 1K buffer and when it fills up I want to call FSWrite to write the
    whole chunk out.  Is this safe, or do I have to copy the whole array?
    (Or can I lock it down?)

2.  If you declare a superclass and then two or more subclasses, is it
    possible to create an object of one subclass and assign it to an object
    variable of the superclass?  I would like to have an array of objects of
    different types (but of similar structures).

3.  What does the debugger look like?  (My poor little 1MB SE has never seen
    it.)

Totally unrelated:

4.  How would you change the font that is used in a dialog's buttons to
    something other than Chicago?

5.  Does anyone have any source to convert BinHex->Mac files?  I am basically
    looking for a routine that will accept two file reference numbers and
    do the work, and hacking the xbin source currently looks like a headache.

-Michael

-- 
Michael Niehaus        UUCP: <backbones>!{iuvax,pur-ee}!bsu-cs!mithomas
Apple Student Rep      ARPA:  mithomas@bsu-cs.bsu.edu
Ball State University  AppleLink: ST0374 (from UUCP: st0374@applelink.apple.com)