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From: rcopm@yabbie.oz (Paul Menon)
Newsgroups: net.micro.mac
Subject: Re: ICONS in buttons (HELP)?
Message-ID: <231@yabbie.oz>
Date: Sat, 17-May-86 02:25:01 EDT
Article-I.D.: yabbie.231
Posted: Sat May 17 02:25:01 1986
Date-Received: Mon, 19-May-86 00:51:07 EDT
References: <245@sivax.UUCP> <58@uva.UUCP>
Distribution: net
Organization: RMIT Comm & Elec Eng, Melbourne, Australia.
Lines: 46
Summary: user items, List Manager, new ROM.

In article <58@uva.UUCP>, dolf@uva.UUCP (Dolf Starreveld) writes:
> 
> They only real solution to your problem seems to be the writing
> of a new control definition procedure.
> There you could handle button type control that does not have a title,
> but which does have an icon instead.
> 
    There are a couple of other solutions...

    (i)	Create a user item (a la Dialog Manager) which can just be a rectangle.
    	You dictate exactly what happens when mousy poops in it. You have to 
	take care of drawing (via a user filter) updating etc... but at least 
	it is on the same (dialog) level.  An example of user items in dialog
	boxes can be found in MacTutor June '85. The code has some redundancies
	(controls being drawn twice... note that the DM takes care of drawing
	all controls in a window for an update event) and glaring 
	inconsistencies (illustrations are not a result of the program...
	take careful not of the scrollbar positions wrt the selection box).
	However, it gives one a good feel about what's happening at the highest
	level of the Mac, the only level (opinion only) to really be 
	programming at.  I wrote a TML Pascal example program using this as an
	outline, I might still have it somewhere...

    (ii)If you are lucky enough to have a MacPlus (grrrr!!), then you can make
	full use of the List Manager (huh? I hear the replies already).  A
	good example can be found in Mactutor (once again) May '86.  I have
	not examined it thoroughly or even implemented it.  Further, since the
	List Manager is a relatively new arrival, I am still naive on the
	subject.  It seems a powerful package though, and could satisfy your
	needs.

			GOOD LUCK

Paul Menon.

    Dept of Communication & Electronic Engineering,
    Royal Melbourne Institute of Technology,
    124 Latrobe St, Melbourne, 3000, Australia
 
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