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- Path: sourcery.han.de!not-for-mail
- Newsgroups: comp.sys.amiga.programmer
- References: <4hpcku$3aq@ousrvr3.oulu.fi>
- From: "Olaf Barthel" <olsen@sourcery.han.de>
- Date: Mon, 11 Mar 1996 23:50:15 +0100
- X-NewsReader: IntuiNews 1.3a (7.9.95)
- Subject: Re: Q: Change SuperBitMap planes?
- Message-ID: <13213732@sourcery.han.de>
-
- In Article <4hpcku$3aq@ousrvr3.oulu.fi>, Timo Karjalainen <tikarjal@haapa.oulu.fi> wrote:
- > In a nutshell: Can I change the BitMap of an open SuperBitMap window and
- > how do I do it properly?
- >
- > A program of mine uses a SuperBitMap window to display graphics. I want
- > the graphics to be zoomable in/out as well as fast'n'smooth scrolling
- > (That's why the SuperBitMap). Now zooming in on the gfx would increase
- > its size, so I'd need to switch to a larger BitMap. The question is, can
- > the BitMap be changed while Intuition is displaying the window?
-
- No, it's not legal.
-
- > As far as I can see, neither RKMs nor autodocs say anything about doing
- > something like this. Is it allowed or do I have to have just the
- > visible part rendered and render the new visible parts while scrolling?
-
- The way layers work, you can't do it without wreaking major havoc
- on the rest of the screen layers and other objects which cache bitmap
- pointers.
-
- --
- Home: Olaf Barthel, Brabeckstrasse 35, D-30559 Hannover
- Net: olsen@sourcery.han.de
-