Path: utzoo!attcan!uunet!mcvax!kth!draken!tut!router!opmvax!hnevanlinna
From: HNEVANLINNA@opmvax.csc.fi
Newsgroups: comp.sys.mac.programmer
Subject: Offscreen-unit & FracApp300 & printing problem ???
Message-ID: <151@opmvax.csc.fi>
Date: 28 Jul 89 21:34:25 GMT
Organization: Tieteellisen Laskennan Palvelu
Lines: 23

I need to print contourmaps in full resolution and since I allready use
MacApp 1.1 for my program I was eager to use FracApp300 sample code TOGETHER
with Offscreen unit made by Skippy White (=Blair?). My sreen refresh works
beautifully, blasting hole A4-paper in 300 pixel per inch resolution
without any difficulties. But the same cobybits to the printerport does
nothing except sometimes. It works, if I reduce my bitmaps size. But that's not
what I want. And it WORKS to screen.
Since copybits moves memory, I call first GetBitsHandle, lock the bits and then
supply the copybits with bitmap got from GetMap. Usually I get nothing.
Sometimes fractions. I feel it must be something to do with memory handling,
but my stack is quite large ( 128k, I have some very recursive code ) and
I get no memory error. Making copybits in smaller slices, didn't help.

So what I am asking:  Is there something about printer grafport (at the
time it is open to be drawn to ), that
makes copybits work differently to my views grafport or should I make some
extra precautions before my copybits.  ( I can send sample of my actual code,
if someone likes to see it )


			Jouni Rynv, Finnish Meteorological Institute

	I have nothing to do with bad weather