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From: mullerd@prism.cs.orst.edu (Douglas Muller)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Problem with Think C and Polygons!
Message-ID: <1991Jun14.150430.24662@lynx.CS.ORST.EDU>
Date: 14 Jun 91 15:04:30 GMT
Article-I.D.: lynx.1991Jun14.150430.24662
References: <13974.2857e2a1@ecs.umass.edu>
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In article <13974.2857e2a1@ecs.umass.edu> farmer@ecs.umass.edu (THE MAD MUSKRAT) writes:
>In Quickdraw.h the pascal function OpenPoly is defined, but the rest of the 
>polygon functions aren't.  I realize that openpoly is the only function that 
>returns a value, but the other functions won't work.  If I use ClosePoly to 
>end the polygon definition I get a compiler error: Invalid use of inline 
>function.  What does that mean??
>
>The code looks like:
>
>void LoadLevel (level, theWell)
>int level;
>PolyHandle theWell[];
>{
>int notDone = 1;
>Handle res;
>res = GetResource ('LEVL', level);
>if (!res) exit(1);
>for (segments=0; notDone; segments++) {
> theWell[segments] = OpenPoly();
> MoveTo(*(*res+(8*segments)),*(*res+(8*segments+1)));
> LineTo(*(*res+(8*segments+2)),*(*res+(8*segments+3)));
> LineTo(*(*res+(8*segments+4)),*(*res+(8*segments+5)));
> LineTo(*(*res+(8*segments+6)),*(*res+(8*segments+7)));
> ClosePoly;
> if (*(*res+(8*segments+4)) == 0 && *(*res+(8*segments+5)) == 0) notDone=0;
> };
>}
>
I Don't know much about polygons but I do know that if you don't
LOCK the handle to that resource you will be in big trouble.

res = GetResource(...);
hState = HGetState(res);
HLock(res);

your code

HSetState(res, hState);

I guaranty that it won't HURT!

Stephen Roderick
mullerd@prism.cs.orst.edu