Xref: utzoo comp.sys.mac.programmer:13077 comp.sys.mac:50369
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From: oster@well.sf.ca.us (David Phillip Oster)
Newsgroups: comp.sys.mac.programmer,comp.sys.mac
Subject: Re: Color QuickDraw and 32Bit Quickdraw
Keywords: Color QuickDraw
Message-ID: <16618@well.sf.ca.us>
Date: 11 Mar 90 13:20:30 GMT
References: <833@umt.UUCP>
Reply-To: oster@well.UUCP (David Phillip Oster)
Organization: Whole Earth 'Lectronic Link, Sausalito, CA
Lines: 38


>I'm trying to change the color lookup
>tables to explore the various effects on my scanned in pictures.
If you are using an 8-bit deep display, remember to change the palette of
the top window when you change its color table. This will make sure you
really get the colors you ask for. Also, remember that when you do a
CopyBits(), is the src and dest have different color tables, the inverse
table of the current graphic device is used to figure out the mapping of
colors from src to dest. If the color table of the gDevice is too different
from the dest pixmap, you won't get high quality pictures.
-- 
-- David Phillip Oster - Note new address. Old one has gone Bye Bye.
-- oster@well.sf.ca.us = {backbone}!well!oster
Newsgroups: poster
Subject: Re: Color QuickDraw and 32Bit Quickdraw
Summary: 
Expires: 
References: <833@umt.UUCP>
Sender: 
Reply-To: oster@well.UUCP (David Phillip Oster)
Followup-To: 
Distribution: 
Organization: Whole Earth 'Lectronic Link, Sausalito, CA
Keywords: Color QuickDraw

In article <833@umt.UUCP> cs__sjh@umt.UUCP (Jeffrey Heng) writes:
>I'm trying to change the color lookup
>tables to explore the various effects on my scanned in pictures.
If you are using an 8-bit deep display, remember to change the palette of
the top window when you change its color table. This will make sure you
really get the colors you ask for. Also, remember that when you do a
CopyBits(), is the src and dest have different color tables, the inverse
table of the current graphic device is used to figure out the mapping of
colors from src to dest. If the color table of the gDevice is too different
from the dest pixmap, you won't get high quality pictures.
-- 
-- David Phillip Oster - Note new address. Old one has gone Bye Bye.
-- oster@well.sf.ca.us = {backbone}!well!oster