Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!brutus.cs.uiuc.edu!apple!keith
From: keith@Apple.COM (Keith Rollin)
Newsgroups: comp.sys.mac.programmer
Subject: Re: 32-bit OS (was: Re: Wide offscreen bitmap won't receive draw commands)
Message-ID: <34184@apple.Apple.COM>
Date: 21 Aug 89 19:56:47 GMT
References: <22321@andante.UUCP> <1989Aug19.221033.2241@geology.wisc.edu> <8352@hoptoad.uucp>
Organization: Apple Computer Inc, Cupertino, CA
Lines: 25

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!

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.

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

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"Argue for your Apple, and sure enough, it's yours" - Keith Rollin, Contusions