Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!dewey.soe.berkeley.edu!oster
From: oster@dewey.soe.berkeley.edu (David Phillip Oster)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Why do Managers fail when called from code resources?
Message-ID: <31776@ucbvax.BERKELEY.EDU>
Date: 7 Oct 89 03:42:42 GMT
References: <52218@tiger.oxy.edu>
Sender: usenet@ucbvax.BERKELEY.EDU
Reply-To: oster@dewey.soe.berkeley.edu.UUCP (David Phillip Oster)
Distribution: usa
Organization: School of Education, UC-Berkeley
Lines: 33

In article <52218@tiger.oxy.edu> sonenbli@oxy.edu (Andrew D. Sonenblick) writes:
>      up the window or not!  Dialogs don't works properly, either.
>      Any time I use Pascal Str255 (I'm using LSC) such as in the call
>      DrawString(&myString) I get nothing (the big null, nil, void) or
If you read the documentation, you'd learn that THINK C 3.0 required you
to use:
#include <SetUpA4.h>

main(){
	RememberA0();
	SetUpA4();
	DebugStr((StringPtr) "\pEureka, a system call that works!");
	RestoreA4();
}

Wuithout the Remember, Setup, you can't get at your global variables.
(Remember ahould be executed exactly once, no matter what else gets
called.)

THINK C v3 needed this to get at string constants. THINK C v4 doesn't need
this to get at string constants, just globals.

Note: the SetUpA5() macro provided in OSUtils.h is not safe for use in a
multi-finder environment: it works by looking at a global variable that
gets swapped in major tasks swaps, so interrupt level code routins may
find the wrong value there.  I handle this by cloning SetUpA4.h and
changing all references to A4 to A5.

> The mac is a detour in the inevitable march of mediocre computers.
> drs@bnlux0.bnl.gov (David R. Stampf)
--- David Phillip Oster          -master of the ad hoc odd hack. 
Arpa: oster@dewey.soe.berkeley.edu 
Uucp: {uwvax,decvax}!ucbvax!oster%dewey.soe.berkeley.edu