Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.csd.uwm.edu!bionet!agate!ucbvax!hoptoad!tim
From: tim@hoptoad.uucp (Tim Maroney)
Newsgroups: comp.sys.mac.programmer
Subject: Re: 32-bit OS (was: Re: Wide offscreen bitmap won't receive draw commands)
Message-ID: <8365@hoptoad.uucp>
Date: 22 Aug 89 19:55:06 GMT
References: <22321@andante.UUCP> <1989Aug19.221033.2241@geology.wisc.edu> <8352@hoptoad.uucp> <34184@apple.Apple.COM>
Reply-To: tim@hoptoad.UUCP (Tim Maroney)
Organization: Eclectic Software, San Francisco
Lines: 35

In article <8352@hoptoad.uucp> tim@hoptoad.UUCP (Tim Maroney) writes:
>Want to display a bitmap or picture with more than 32,767 pixels in a
>scrolling window?  Better write your own scroll bar CDEF then, and set
>up your own versions of the value etc. routines, because the Control
>Manager can't imagine you would ever want a 32-bit control.  Same goes
>for text -- want to display more than 32,767 lines in a scrolling text
>document?  Don't look to the OS for help, except for drawing the
>characters!

In article <34184@apple.Apple.COM> keith@Apple.COM (Keith Rollin) writes:
>Sounds like a job for MacApp! MacApp allows views to have 32-bit coordinates.
>Granted that there are some limitations to this imposed by QuickDraw and
>TextEdit (ie, you can't draw a line or square that's larger than 16-bits on
>a side, or have longer TextEdit views), but this hasn't shown itself to be a
>problem yet.

You must not have done any TIFF document views in MacApp yet.  The Quickdraw
16-bit plane is a nontrivial problem when displaying multi-page documents.

>Also, scrollbars have been hacked to support 32-bit values in MacApp. The
>technique it uses can be used in any application.

I'm very happy for you.  Too bad you haven't chosen to share the
technique with us.  Or do you really think that people are going to
shell out a hundred bucks (plus extra for some apparently neccessary
add-ons) for code they can't even use directly, but have to cannibalize
and port?  And port not only across language lines, but from an object
oriented language to a HLL?  It's really no wonder that MacApp hasn't
caught on -- few of us have any interest in buying a pig in a poke
when just the poke is already too big for our sties....
-- 
Tim Maroney, Mac Software Consultant, sun!hoptoad!tim, tim@toad.com

"Americans will buy anything, as long as it doesn't cross the thin line
 between cute and demonic." -- Ian Shoales