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From: qix@mit-prep.ARPA (Ed Puckett)
Newsgroups: comp.sys.amiga
Subject: Re: SUPER_BITMAP Windows
Message-ID: <65@mit-prep.ARPA>
Date: Tue, 21-Apr-87 23:58:00 EDT
Article-I.D.: mit-prep.65
Posted: Tue Apr 21 23:58:00 1987
Date-Received: Wed, 29-Apr-87 06:43:33 EDT
References: <1013@crash.CTS.COM>
Organization: The MIT AI Lab, Cambridge, MA
Lines: 18

In article <1013@crash.CTS.COM>, Bill Kelly writes:
> . . . so, I decided to open a
> SUPER_BITMAP, GIMMEZEROZERO window (in a customscreen) so that I could draw
> my text into it's own bitmap without disturbing anybody.  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.
>                                                 Bill Kelly
> {akgua, hplabs!hp-sdd, sdcsvax}!crash!pnet01!billk

You need to call CopySBitMap(layer) to make the changes visible.
SyncSBitMap(layer) does the reverse: makes the BitMap reflect the current
state of the display.  Hope this helps.

                              -Ed Puckett.