Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!sun-barr!apple!well!oster
From: oster@well.sf.ca.us (David Phillip Oster)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Opening and Displaying PICT files
Message-ID: <21595@well.sf.ca.us>
Date: 10 Nov 90 09:41:29 GMT
References: <1990Nov6.024454.4605@hub.cs.jmu.edu>
Distribution: comp
Organization: Whole Earth 'Lectronic Link, Sausalito, CA
Lines: 25

There is a tech note on dispaying pictures. OpenPicture has nothing to
do with opening PICT files and displaying them. OpenPicture records a
PICT into a data structure so you can WRITE it. To READ a Pict, the
easy way is, if it will fit in memory, read it into a handle, then:

	Rect	r;
	PicHandle	pic;

	... get pic...
	r = (**pic).picFrame;
	OffsetRect(&r, -r.left, -r.top);
	DrawPicture(pic, &r);

remember that you must be using a color window for a PICT 2 to play correctly,
and that while NewCWindow() manipulates palettes for you, if you are using
a 'wtcb', a 'actb', or a 'dctb' resource to get color from GetNewWindow(),
GetNewDialog(), or Alert() respectively, that these won't manipulate the
palettes for you.

Remember that when you are recording pictures you should do a 
ClipRect(&thePort->portRect) to keep the clip included in the picture from
overflowing.
-- 
-- David Phillip Oster - Note new signature. Old one has gone Bye Bye.
-- oster@well.sf.ca.us = {backbone}!well!oster