Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!gatech!psuvax1!psuvm.bitnet!cunyvm!byuvax!taylorj
From: taylorj@yvax.byu.edu
Newsgroups: comp.sys.mac.hypercard
Subject: re: using fields with scroll bars
Message-ID: <652taylorj@yvax.byu.edu>
Date: 26 Jun 89 05:25:43 GMT
Lines: 16

I agree with the other guys that it would probably be more efficient to
dispense with the button, but here's a quick and easy way to find out if the
user has scrolled the field.  When you put up the button, save the scroll state
of the field in a global variable ('put the scroll of field <whatever> into
oldScroll').  The put a mouseWithin handler in the field that checks to see
if the scroll has changed.  It would look something like this:

  on mouseWithin
    global oldScroll
    if the scroll of me <> oldScroll then
      -- user has scrolled: hide button, or whatever you need to do
    end if
  end mouseWithin


Jim Taylor
Microcomputer Support for Curriculum
Brigham Young University
taylorj@byuvax.bitnet