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From: navas@cory.Berkeley.EDU (David C. Navas)
Newsgroups: comp.sys.amiga.advocacy
Subject: Re: Hooks into the OS vs doing it all yourself (Was Re: Clueless Mac<>)
Message-ID: <10658@pasteur.Berkeley.EDU>
Date: 31 Jan 91 21:17:26 GMT
References: <1991Jan21.004720.25985@ncsuvx.ncsu.edu> <12880@life.ai.mit.edu> <1991Jan21.172643.20642@Neon.Stanford.EDU> <7594@sugar.hackercorp.com> <1991Jan25.075446.716@Neon.Stanford.EDU> <7658@sugar.hackercorp.com> <1991Jan31.011702.12095@Neon.Stanford.EDU>
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In article <1991Jan31.011702.12095@Neon.Stanford.EDU> torrie@cs.stanford.edu (Evan J Torrie) writes:
>  Can you have callback functions.. i.e. get Intuition to call your
>function while it's moving the knob?

A)  Intuition sends a message to your task every time the knob is moved.
B)  You can use boopsi in 2.0 to have your functions (or even other objects)
    called while you are dragging the knob.

    eg.  You can build an object which has a pre-defined scrollbar which
	 auto-magically calls a text-object to display "current page" or
	 whatever.

Hope that helps.

David Navas                                   navas@cory.berkeley.edu
"The crudest form of a working program is a program that doesn't work." -me
[Senior EECS major.  Also try c186br@holden, c260-ay@ara and c184-ap@torus]