Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!mdisea!gilbert
From: gilbert@MDI.COM (John Gilbert)
Newsgroups: comp.sys.mac.hypercard
Subject: Re: XCMD Update screen HELP REQUIRED PLEASE
Message-ID: <1991Feb5.224341.13543@MDI.COM>
Date: 5 Feb 91 22:43:41 GMT
References: <1991Feb3.111602.15893@cc.ic.ac.uk> <5999@rex.cs.tulane.edu>
Sender: news@MDI.COM
Organization: Motorola Mobile Data; Seattle, WA
Lines: 46

In article <5999@rex.cs.tulane.edu> mandel@vax.anes.tulane.edu (Jeff E Mandel MD MS) writes:
>In article <1991Feb3.111602.15893@cc.ic.ac.uk> barnett@cc.ic.ac.uk (G.J.
>Barnett) writes:
>>
>>        Does anyone know if hypercard 1.2.5 (and hypercard 2.0)
>>ignores update screen events when it has handed control to an XCMD, and
>>if so how can you round it ? 
>>
>
>  I have noticed that HC 2.0 seems to deal with update events somewhat more
>frequently than the idle loop; I have a stack that fills in forms, some fields

I too have a question about this.  I often use go next/prev buttons in my
stack with the following style...

on mouseDown
  repeat while the mouse is stillDown  -- may not be exact...
    go next card   -- or prev card, as the case may be...
  end repeat
end mouseDown

This allows me to lean on the mouse button until I reach the card I am
scanning for.  With 2.0, and in some cases in 1.2.5, but not earlier,
a simple click on the mouse to go one card is usually lost.  I fixed this
by adding a 'go next card' before the repeat loop.

But now in HC 2.0, it seems to suppress screen painting within a
handler/script.  If I lean on the mouse, I whizz through cards pretty
quickly, but don't see it.  I let go and I am way past where I want to
be.  All I have found to do is stop using the buttons this way, but I
miss it.

Is there some other way I can do this?  Is there a way to force the
painting of a card before an event handler is completed?  I also have some
functions whic scan all cards an do some maintenance.  Some of them take a
while and used to show me each card as it moved, but this is no longer the
case.  I am changing some of the scripts to put some kind of progress indicator
in the message bos, but in some cases this is less desirable.

Thanks for any help....


-- 
John Gilbert
gilbert@MDI.COM
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