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1994-08-27
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993b
Date: Wed, 1 Jun 94 10:27 BST
From: steve@cs.city.ac.uk (Steven Eker)
To: gem-list@world.std.com
Subject: Re: Window Cycling
In-Reply-To: Mail from 'Warwick Allison <warwick@cs.uq.oz.au>'
dated: Wed, 01 Jun 1994 17:47:53 +1000
Precedence: bulk
Warrick wrote:
>In old versions of TOS, BOTTOMing was VERY difficult to implement, and
>so `cycle' was define to simply top the bottom-most window. Under the
Couldn't you bottom a window simply by topping all other windows
in bottom to top order? The superfluous redraws could then be handled
by queueing redraw messages for the topped windows until the bottom operation
was finished, discarding messages for windows that were originally above the
bottomed window.
(You would have to do the queueing yourself, reading the message
pipe after each top operation since the AES message pipe is short.)
Of course this sort of mucking about should be hidden in a library that
checks if AES supports bottoming directly for efficiency.
Steven