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From: davef@Jessica.stanford.edu (David Finkelstein)
Newsgroups: comp.sys.mac.hypercard
Subject: Re: MacWeek dragRECT XCFN
Message-ID: <1788@Portia.Stanford.EDU>
Date: 24 Apr 89 17:12:04 GMT
References: <12291@ut-emx.UUCP>
Sender: USENET News System <news@Portia.stanford.edu>
Reply-To: davef@Jessica.stanford.edu (David Finkelstein)
Organization: Stanford University
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In article <12291@ut-emx.UUCP> ben@ut-emx.UUCP (Benjamin J. Sloan) writes:
>This week's (ending April 20) edition of MacWeek magazine makes mention of an
>XCFN called 'dragRECT' for use in making scroll bars in HyperCard.  Does
>anyone know of such an XFCN and/or how one might obtain it?
>

What exactly are you trying to do?  I implemented a reasonable scroll
bar using 5 buttons: One each for the top and bottom arrows, one for
the elevator, and one for the scroll bar itself.  On mousedown in the
scroll bar check to see if you've clicked above or below the scroll
box button.  Works fine for my needs.  Performance might be improved
by having a separate button above and below the elevator (which you
resize after each click).

You can also use the scroll bar of a scrolling field, let the user
scroll the field while you "scroll" whatever you want to scroll.
Performance is kinda slow though...

David Finkelstein
Academic Information Resources
Stanford University