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Re: flashing screen symptoms (an example)

From: Neil Zanella
Subject: Re: flashing screen symptoms (an example)
Date: Fri, 3 Nov 2000 22:54:48 -0330 (NST)

On Fri, 3 Nov 2000, Thomas Dickey wrote:

> On Fri, Nov 03, 2000 at 09:26:53PM -0330, Neil Zanella wrote:
> > But whenever a subwindow is created it overlaps with stdscr so what
> > exactly is the meaning of a nonoverlapping window? All of the windows
> > I am using have the following property:
> stdscr is a special case (I don't think anyone tries to have it overlay
> other windows ;-)

On the other hand every window overlays stdscr.

Window w1 is said to overlay window w2 in case w1 is properly contained
in window w2. However when you say that two windows "overlap" are you
excluding the case where one overlays another? You said:

"When you have to worry about overlapping windows, and deciding which
should be repainted, then you should think about using the panel library."

Hence does the term overlap apply to windows satisfying any of the three
conditions posted in my previous e-mail, namely:

given any two windows w1 and w2 exactly one of the following holds:

(i) w1 is entirely contained in w2
(ii) w2 is entirely contained in w1
(iii) w1 and w2 are entirely disjoint

? i.e. do you call the above overlapping windows? They are certainly
overlayed but would you say they overlap? If w1 is contained in w2
then isn't w2 once again acting like an stdscr?



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