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From: cjmchale@swift.cs.tcd.ie
Newsgroups: comp.windows.x
Subject: Re: How do I block X events?
Message-ID: <7507.27444008@swift.cs.tcd.ie>
Date: 16 Nov 90 19:37:44 GMT
References: <1990Nov15.190220.20413@csug.rdg.ac.uk>
Organization: Computer Science Department, Trinity College Dublin
Lines: 32

In article <1990Nov15.190220.20413@csug.rdg.ac.uk>,
ac1@csug.cs.rdg.ac.uk (Andrew Cunningham) writes:
> I am writing an X application using the Motif toolkit (on HP-UX 7.0, if it
> makes a difference).  The program has to perform a computationally intensive
> task from time to time, and I'd like to be able to block the user interface
> while this is going on.  Ideally I want to 
> 
> 	a) Display an hourglass cursor over the whole application
> 
> 	b) Ignore any mouse/keyboard events until the operation is 
> 	   complete.
> 
> Can anyone enlighten me as to how I could perform either or both of
> these tasks?

Create an InputOnly window big enough to cover the entire appliction.
Set up the do_not_propagate_mask on this window so that no no events
are propagated; this takes vare of b). Set the cursor of this window
to be an hourglass cursor; this takes care of a).

When the CPU intensive task is finished you simply either destroy the
window or unmap it to return to "normal" operation.


Regards,
Ciaran.
-- 
Ciaran McHale		"An inappropiate joke for every occasion"
Department of Computer Science, Trinity College, Dublin 2, Ireland.
Telephone: +353-1-772941 ext 1538    FAX: +353-1-772204   Telex: 93782 TCD EI
email: cjmchale@cs.tcd.ie	or	cjmchale%cs.tcd.ie@cunyvm.cuny.edu
	My opinions are.