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From: stoms@castor.ncgia.ucsb.edu (David Stoms)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Need large array on Think C.
Message-ID: <5506@hub.ucsb.edu>
Date: 26 May 90 16:21:52 GMT
References: <265986A9.26645@paris.ics.uci.edu>
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In article <265986A9.26645@paris.ics.uci.edu> jchoi@paris.ics.uci.edu (John Choi) writes:
>     Sorry for this trival question, but I really need to get this
>done.  When I declare an array ('char arr[100][300]'), the complier
>gives me an 'illegal array bounds' error.  Is there any way I can
>increase this limit?

I'm getting tired of this question so I think I'll try to give a generic
answer to cover any further problems.

When you want lots of variable space >32K in Think C or any compiler
that limits globals to 32K, you have to use the Memory Manager (gasp!).
If you want a big array, such as "char arr[100][400]" then you need to
sever your dependancy from the compiler and get your hands dirty.

To allocate this array:

char	*arr;

arr = NewPtr((Size)100*400);

Then to use the array you can index like this:

x = 20; y = 32;
*(arr+x+y*100) = 'H';

Thats it! If you want to use a handle the only big difference is:

*(*arr+x+y*100)  << note the extra * >>

If you do this, be sure to lock down the handle when your r.h.s. could
move memory.

Josh.