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From: daveo@Apple.COM (David M. O'Rourke)
Newsgroups: comp.sys.mac.misc
Subject: Re: The Mac's resource fork: does Win 3 have one?
Message-ID: <42672@apple.Apple.COM>
Date: 5 Jul 90 18:57:08 GMT
References: <2322.268f7cca@csc.anu.oz> <2964@gmdzi.UUCP> <7705@jarthur.Claremont.EDU> <2966@gmdzi.UUCP> <23070@boulder.Colorado.EDU> <2987@gmdzi.UUCP> <42649@apple.Apple.COM> <3038@gmdzi.UUCP>
Organization: Apple Computer Inc, Cupertino, CA
Lines: 34

strobl@gmdzi.UUCP (Wolfgang Strobl) writes:
>This sounds indeed nice. A few questions: what is the search order in the
>above resource search, i.e. what if there is more than one program running
>and both have open resources files? In order to have an OS routine use my
>own resource, I have to know some details about the internals of this
>routine. Is all this officially documented?

  The search order is the most recently opened resource fork first, then
the next one, next one, and finally the System File itself.  As far as having
more than one Application with an open resource fork Mulit-Finder keeps
the resource search so that it appears "correct" to the currently running
Application and only searches the System Wide resource forks, and any
files the Application opened.

  Yes this is all officially documented as the Resource Manager was designed
that way on purpose.

  ps.  There has been an optimization that you can "force" the resource 
       manager to only serach the most immediate resource file for the
       requested resource.

  A typical resource search path would look like the following....

  System File <---- Application <--- <addition files opened by App.>
   Last File        Next-to-last     search order reverse of open order.

  Thankyou for the information, nice to see a measured response with some
good content rather than the random flames.

  Any additional questions will be gladly answered.
-- 
daveo@apple.com                                               David M. O'Rourke
_______________________________________________________________________________
I do not speak for Apple in *ANY* official capacity.