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From: S.W.L.Yip@newcastle.ac.uk (S.W.Yip)
Newsgroups: comp.sys.mac.programmer
Subject: Journaling (record & playback) of inputs
Message-ID: <1991Jun26.162909.22605@newcastle.ac.uk>
Date: 26 Jun 91 16:29:09 GMT
Sender: news@newcastle.ac.uk
Distribution: comp.sys.mac.programmer
Organization: University of Newcastle upon Tyne, UK NE1 7RU
Lines: 27

I am stuck, desperate ... please HELP !

I am trying to use the "Journaling Mechanism" ,
as described on page I-261 in Vol.1 of Inside Macintosh.
I need to record user inputs (keyboard, mouse inputs) 
onto a journal file and then play it back as a kind of
automation.  I have tried to set JournalFlag and JournalRef
with suitable values, with no effect. 

I have written a DeskAccessory /driver for this, using
ThinkPascal.(I don't have MWP or assembler.) I have to trust
the {$J+} compiler directive of ThinkPascal to access external
globals (i.e. JournalFlag, JournalRef). I have all volumes
of Inside Macintosh and have read chapters about DA, drivers,
low memory global variables. My DA only seems to receive Control
calls from the DA manager, but NOT the event manager ! 

How do I know the event manager knows the existence of my
DA/driver? The only link seems to be the JournalFlag global
variable. I have now found out the location for JournalFlag
is $8DE, and tried to change its value to 16 (playback) or
17 (record) using the in-line assembler within a C program, 
but failed (its value remains as 0 after move.w #17, 0x8DE).

Any advice will be appreciated!
Stephen Yip, University of Durham, England, Uk.  
S.W.L.Yip@durham.ac.uk