Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!cs.utexas.edu!uunet!ficc!peter
From: peter@ficc.uu.net (Peter da Silva)
Newsgroups: comp.windows.x
Subject: Re: Contents of windows
Message-ID: <4050@ficc.uu.net>
Date: 1 May 89 19:55:38 GMT
References: <723@boing.UUCP> <8905011149.AA00201@expire.lcs.mit.edu>
Organization: Xenix Support
Lines: 23

In article <8905011149.AA00201@expire.lcs.mit.edu>, rws@EXPO.LCS.MIT.EDU writes:
> This is a particular policy decision,

This terminology is a mite confusing... what do you mean by a policy decision.
The decision to force client programs to support disclose events is as much
a policy decision as the decision to force the server to retain obscured
bitmaps.

> one that may be fine for some
> environments, but probably not all.  For example, this may mean that a
> client at some point cannot get a dialog box popped up to ask the user some
> vital question, or to warn the user of some vital event...

The Amiga deals with this problem with what are called 'alerts'. An alert is
implemented with a small dedicated bitmap, just big enough to allow the
system to open a standard sized 'window' and ask a yes/no question. The user
responds by clicking the left or right mouse button. Programs call a routine
called "DisplayAlert" to get an alert.
-- 
Peter da Silva, Xenix Support, Ferranti International Controls Corporation.

Business: uunet.uu.net!ficc!peter, peter@ficc.uu.net, +1 713 274 5180.
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