Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!IRO.UMontreal.CA!ouareau.IRO.UMontreal.CA!babin
From: babin@IRO.UMontreal.CA (Gilbert Babin)
Newsgroups: comp.unix.programmer
Subject: problem with screen update optimization in curses
Keywords: C, curses, multiple windows
Message-ID: <1991Jan23.202536.1406@IRO.UMontreal.CA>
Date: 23 Jan 91 20:25:36 GMT
Sender: news@IRO.UMontreal.CA
Reply-To: babin@IRO.UMontreal.CA (Gilbert Babin)
Organization: Universite de Montreal
Lines: 21

I am currently writing a package using curses to implement simple
windowing objects, i.e. menu, submenu, dialogboxes, etc...

I developed part of it on VMS, but I'm trying to get the same result
on UNIX (SUN).  Unfortunately, when refreshing the screen in Unix,
it optimizes the flow of characters sent to the screen, which
does not occur under VMS, which will always completely refresh.

I tried using touchwin() before refreshing evry window, but for
each window update the 3 or 4 layered windows flicker.  This
becomes annoying when it occurs every time you type a character...

Is there any way to go around this optimization without having
the screen flickering, and without having to redraw each
window every time it has to be refreshed?

--
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Gilbert Babin			Rensselaer Polytechnic Institute
babin@iro.umontreal.CA		Decision Sciences & Engineering Systems
(514)382-3863			Troy, NY, USA, 12180-3590