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From: carolyn@cbmvax.cbm.UUCP (Carolyn Scheppner)
Newsgroups: net.micro.amiga
Subject: Re: Custom Intuition Pointer: Setting color registers
Message-ID: <872@cbmvax.cbmvax.cbm.UUCP>
Date: Fri, 10-Oct-86 11:13:35 EDT
Article-I.D.: cbmvax.872
Posted: Fri Oct 10 11:13:35 1986
Date-Received: Sat, 11-Oct-86 20:27:13 EDT
References: <556@cubsvax.UUCP>
Reply-To: carolyn@cbmvax.UUCP (Carolyn Scheppner)
Organization: Commodore Technology, West Chester, PA
Lines: 51

In article <556@cubsvax.UUCP> dss@cubsvax.UUCP (David Silver) writes:
>
>I want to use a custom pointer and want to set the colors explicitly,
>intead of using the current preferences default.  The C language output
>of "SpriteMaker" generates code that calls the routine SetRGB4() with
>args (viewport, register, red, green, blue) - by the way, where is
>this call documented???  Anyway, it sets registers 17, 18 and 19 to
>my new sprite colors.  According to the Hardware (or was it technical)
>reference manual, these are the color registers for sprite #1.
>
>It doesn't seem to work.  

   Works fine for me.  SetRGB4() is documented in the autodocs of the
graphics library functions (in an RK manual appendix).  I think the
Addison-Wesley RK manual mixed the functions from the various libraries
together and then alphabetized them.  It's on their page A-160.

   Some people get confused on this one because the vp parameter is
described as "viewport to affect" rather than "pointer to viewport
to affect".  As far as I know, in any autodocs, vp means a pointer
to a viewport, rp means a pointer to a rastport etc.

   Here's a real quick and dirty example that changes my mouse's gray
fur to white.

----------------------------------------------------------------------

/* BleachMouse.c */
#include "intuition/intuitionbase.h"

struct IntuitionBase *IntuitionBase;
ULONG GfxBase;

main()
   {
   IntuitionBase =
      (struct IntuitionBase *)OpenLibrary("intuition.library",0);
   GfxBase = OpenLibrary("graphics.library",0);

   SetRGB4(ViewPortAddress(IntuitionBase->ActiveWindow),17,15,15,15);

   CloseLibrary(IntuitionBase);
   CloseLibrary(GfxBase);
   }

-- 
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Carolyn Scheppner -- CBM   >>Amiga Technical Support<<
                     UUCP  ...{allegra,caip,ihnp4,seismo}!cbmvax!carolyn 
                     PHONE 215-431-9180
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