Path: utzoo!attcan!uunet!mailrus!cs.utexas.edu!swrinde!ucsd!ames!dftsrv!mimsy!mojo!russotto
From: russotto@eng.umd.edu (Matthew T. Russotto)
Newsgroups: comp.sys.mac.programmer
Subject: Re: {Bit,Pix}Maps in PICT files
Keywords: BitMaps PixMaps PICT
Message-ID: <1990Jun8.205052.16133@eng.umd.edu>
Date: 8 Jun 90 20:50:52 GMT
References: <2529@network.ucsd.edu>
Sender: news@eng.umd.edu (The News System)
Organization: College of Engineering, Maryversity of Uniland, College Park
Lines: 21

In article <2529@network.ucsd.edu> rmorgan@network.ucsd.edu (Robert Morgan) writes:
>   Q1:
>   Is it possible to have a BitMap in a version 2 PICT ?
>   The documentation seems to imply that PixMaps replace BitMaps in
>   version 2 PICT files, but I wanted to make sure...
Short Answer: Yes
Long Answer: IM V-104, note 4 (the stuff you mention in Q2)

>   Q2:
>   IM V page 104 seems to say that the high bit of rowBytes tells you this,
>   but in the same paragraph they say that "In general, the difference
>   between version 1 and version 2 formats is that the pixMap replaces
>   the bitMap..."  So, can I just check the PICT version instead of
>   the high bit of rowBytes ?
No, ignore that phrase. I'm pretty sure that if a copybits of a 1-bit bitmap to
a grafport is done while a picture is open, you will get a bitmap in the
picture, and not a pixmap.  Even if this isn't true, its much safer to assume
it is.
--
Matthew T. Russotto	russotto@eng.umd.edu	russotto@wam.umd.edu
][, ][+, ///, ///+, //e, //c, IIGS, //c+ --- Any questions?