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From: Lawson.English@p88.f15.n300.z1.fidonet.org (Lawson English)
Newsgroups: comp.sys.mac.programmer
Subject: Re: LClikLoop in a DA
Message-ID: <34232.27875328@stjhmc.fidonet.org>
Date: 6 Jan 91 16:25:53 GMT
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Tim Maroney writes in a message to All

TM> You have to cheat. There are a few standard ways to do this. 
TM> The most common is to write a little assembly language that uses 
TM> PC-relative addressing to manage a little block of storage (DC.L) 
TM> in code space. 
TM> Another way, probably worse, is to rely on the undocumented fact 
TM> that the List Manager passes the list handle to the click loop 
TM> routine in register a3 or a4 -- I don't recall which. Of course, 
TM> this could all change in the future.

Another way (and better IMHO) is to reserve enough heap space for your DA 
globals,
and put them into a record/struct whose handle is stored in dCtlStorage. Then,
 
when you need 'em, you can simply lock dCtlStorage and typecast it to 
myRecordStructHandle.

Lawson
 

 

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