Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!bloom-beacon!apple!jdevoto
From: jdevoto@Apple.COM (Jeanne A. E. DeVoto)
Newsgroups: comp.sys.mac.hypercard
Subject: Re: Checking for field changes
Message-ID: <28858@apple.Apple.COM>
Date: 12 Apr 89 21:37:31 GMT
References: <89096.04:03:29.AXS101@PSUVM> <1114@atux01.UUCP> <1266@tellab5.tellabs.CHI.IL.US> <29463@sri-unix.SRI.COM> <80695GFX@PSUVM>
Organization: Apple Computer Inc, Cupertino, CA
Lines: 13

In article <80695GFX@PSUVM> GFX@PSUVM.BITNET writes:
>So far, this discussion seems to assume that we would be concerned by
>_changes_ in field content.  But I can easily think of applications for
>a function that would sense a word click _before_ any change has
>occurred. [...]

The openField message is sent whenever the user clicks in a field (or
tabs into it). So a warning or reminder can be placed in the field's
openField handler, while any error checking can take place in a closeField
handler.

jeanne a. e. devoto
jdevoto@apple.com