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From: scott@applix.UUCP (Scott Evernden)
Newsgroups: comp.sys.amiga
Subject: Re: SUPER_BITMAP Windows
Message-ID: <445@applix.UUCP>
Date: Mon, 20-Apr-87 12:53:01 EST
Article-I.D.: applix.445
Posted: Mon Apr 20 12:53:01 1987
Date-Received: Tue, 21-Apr-87 01:07:56 EST
References: <1013@crash.CTS.COM>
Reply-To: scott@applix.UUCP (Scott Evernden)
Organization: APPLiX Inc., Westboro MA
Lines: 26

In article <1013@crash.CTS.COM> billk@pnet01.CTS.COM (Bill Kelly) writes:
>... The problem is that
>I am drawing into the bitmap, but the bitmap isn't being displayed on the
>screen.  Is there any trick to doing this?  The window is a BACKDROP,
>BORDERLESS, GIMMEZEROZERO, SUPER_BITMAP window in a screen with a depth of
>one.  My words draw into the bitplane in the BitMap of my window (which is the
>only one open on the screen) but nothing (as I said) is being displayed on the
>screen.

In order to draw into a SuperBitmap window, you need to:

1) draw into the Window's bitmap via its RastPort; the SuperBitmap
   is updated from the Window's bitmap whenever you do a ScrollLayer
   or whenever you do a (layer lib) SyncSBitmap.

2) draw into the SuperBitmap (maybe thru a temp RastPort) and
   then do a (layer lib) CopySBitmap to update the Window layer (and
   hence the display).

So, the short answer is to study the Layers Library CopySBitMap and
SyncSBitmap calls.

I don't remember if you need to lock your layers around these calls; they
may do this for you already.

 - scott