Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!samsung!uunet!comp.vuw.ac.nz!waikato.ac.nz!ldo
From: ldo@waikato.ac.nz (Lawrence D'Oliveiro, Waikato University)
Newsgroups: comp.sys.mac.hypercard
Subject: Want an "update" message (was Re: Need a new type of field)
Message-ID: <1991Mar18.184441.3157@waikato.ac.nz>
Date: 18 Mar 91 05:44:41 GMT
References: <1991Mar13.202827.4178@hubcap.clemson.edu>
Organization: University of Waikato, Hamilton, New Zealand
Lines: 14

I wonder, you could do a lot of things by just directly drawing to the
card window. The only drawback is that you lose your drawing when the
window is updated.

Suggested fix: wouldn't it be nice if HyperCard sent the current card
an "update" or "repaint" (a la Wingz) message when the card window needed
updating? An XCMD could then do a ValidRgn call on the area that it drew
in, and HyperCard would redraw everywhere but in there.

Lawrence D'Oliveiro                       fone: +64-71-562-889
Computer Services Dept                     fax: +64-71-384-066
University of Waikato            electric mail: ldo@waikato.ac.nz
Hamilton, New Zealand    37^ 47' 26" S, 175^ 19' 7" E, GMT+12:00
Anniversary: 1981: Concorde carries 100th passenger.