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Path: utzoo!utcs!mnetor!seismo!ut-sally!pyramid!amiga!jimm
From: jimm@amiga.UUCP
Newsgroups: net.micro.amiga
Subject: Re: help with Gadgets
Message-ID: <1408@amiga.amiga.UUCP>
Date: Mon, 14-Jul-86 21:15:19 EDT
Article-I.D.: amiga.1408
Posted: Mon Jul 14 21:15:19 1986
Date-Received: Tue, 15-Jul-86 04:56:48 EDT
References: <1925@sdcsvax.UUCP>
Reply-To: jimm@homer.UUCP (Jim Mackraz)
Organization: Commodore-Amiga Inc., 983 University Ave #D, Los Gatos CA 95030
Lines: 42

In article <1925@sdcsvax.UUCP> bruss@sdcsvax.UUCP (Brian Russ) writes:
>
>	I have constructed a requester with several boolean,
>TOGGLESELECT gadgets.  I would like to be able to have one
>gadget cancel the rest (if the user selects one to be ON, the
>rest should automatically be turned OFF).  Is there any way
>to do this?  The Intuition manual mentions a MutualExclude
>flag, but it says it's not implemented!?  There must be some
>way of doing this since applications like TextCraft do this 
>sort of thing all the time.  Help!

MutualExclude is best done by your program as follows:
    RemoveGadget() (or RemoveGList()) gadgets whose state
	you want to change (save the 'position' returned by these calls)
    Set or reset the SELECTED flag on each gadget to suit
    AddGadget() (or AddGList())  using the 'position' above
    RefreshGList() to refresh the gadgets imagery.

This all seems to work only with GADGIMAGE and GADGHCOMP or GADGHIMAGE,
BOOLEAN gadgets only.

>	Also, is there any way to changes the window colors
>from within a C program?  In particular, I'm using a 
>WBENCHSCREEN window and would like to use more than four colors
>as well as possibly change the original four. (Do I use
>SetPrefs() for this?).

Hardly.  The number of colors available is based on the depth of the
screen's bitmap, and is not variable between windows on the same screen.
Changing the original four is possible via SetPrefs, but changing the
workbench colors without the user's input must be considered a Bad Thing
To Do, from a user-interface perspective.

Using one's own custom screen opens up more possibilities, though.

>
>					Brian Russ
>					EECS Department
>					UC San Diego
>					...!sdcsvax!bruss
Welcome aboard.
Your questions indicate a creative, if not actually deranged, mind.