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From: dce@smsc.sony.com (David Elliott)
Newsgroups: comp.sys.mac.hypercard
Subject: Improved sliders and other XCMD controls for HC2.0?
Message-ID: <1990Nov26.210038.688@smsc.sony.com>
Date: 26 Nov 90 21:00:38 GMT
Sender: dce@smsc.sony.com (David Elliott)
Organization: Sony Microsystems Corp, San Jose, CA
Lines: 10

I seem to remember that HC2.0 was supposed to allow XCMDs and XFCNs
to get area exposure callbacks so that controls implemented by
XCMDs/XFCNs could redraw themselves when needed. Is this true?
If so, has anyone heard of any controls that take advantage of this?

I have an HC1.2 stack that uses sliders, and I had to make the
stack redraw the slider every few seconds to deal with things like
the editor coming up and covering the window.  I ended up using a
different kind of slider, but it would be nice to have controls
that could handle the redraw themselves.