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From: jackiw@cs.swarthmore.edu (Nick Jackiw)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Inconsistent SysEnvirons declaration in IM?
Message-ID: <1989Dec8.160406.13158@cs.swarthmore.edu>
Date: 8 Dec 89 16:04:06 GMT
References: <4184@sbcs.sunysb.edu>
Reply-To: jackiw@cs.swarthmore.edu (Nick Jackiw)
Organization: Visual Geometry Project, Swarthmore College, PA
Lines: 35

vallon@sblw.CS.SunySB.EDU (Justin Vallon) writes:
> 1) SysEnvirons' procedure declaration uses SysEnvRecPtr, while the
>    discussion uses SysEnvPtr.  Which one is right?

I-M is partially in error. You want to pass a pointer to the data
structure. (A regular pointer, not a Ptr.)  In Pascal, this is done
by apparently passing the entire data structure. See below.

> 2) I am using LS Pascal 2.0, and have no success in trying to
>    compile any of the following:
> 	[Incorrect versions Deleted]
> ... All give undefined symbol (or whatever the error is)
> err := SysEnvirons(1, x);
> ... Gives Type Mismatch if I type in the decl of SysEnvRec/Ptr
> Anybody use SysEnvirons from LSP 2.0?

Yes, try

var theWorld:SysEnvRec;

begin
 if SysEnvirons(1,theWorld)=noErr then
	begin
	  HasCQD:=theWorld.hasColorQD;
	  etc. etc.
	end
end



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