Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!tut.cis.ohio-state.edu!uc!nic.MR.NET!umn-cs!mmm!andyi
From: andyi@mmm.UUCP (Andy Ihlenfeldt)
Newsgroups: comp.sys.mac.programmer
Subject: Re: 32-Bit Color QuickDraw
Message-ID: <1273@mmm.UUCP>
Date: 28 Jun 89 21:09:52 GMT
References: <2497@quanta.eng.ohio-state.edu>
Reply-To: andyi@mmm.UUCP (Andy Ihlenfeldt)
Organization: 3M Company - Software and Electronics Resource Center (SERC); St. Paul, MN
Lines: 22

>       I was wondering if the 32-Bit QD extensions allow me to copy
>a 24-bit planar image (8 bits of red, 8 bits of blue, 8 bits of green)
>into an 8 bit pixmap using the CopyBits call.  Is there a Tech Note which
>describes the new Color QuickDraw.  Thanks in advance.

Jim -

I believe the answer to your question about CopyBits is YES.
We created an offscreen 32-bit Pixel Map and then used CopyBits to
copy to a window on the MacII monitor which has an 8 bit Pixel Map.
There are a couple of "confidential drafts" of tech notes that we
somehow got a hold of (don't ask me, I don't know) that describe 32
bit QD and off-screen support.

We have problems ourselves though.  We have trouble create on-screen
32 bit windows and draw directly into them.  Seems strange.  We're
looking for more leadership from Apple on this one.

Jill Sicora
c/o Andy Ihlenfeldt
andyi@mmm.uucp
(612) 736-7143