From simon.urbanek at r-project.org  Wed Jul 21 22:52:15 2010
From: simon.urbanek at r-project.org (Simon Urbanek)
Date: Wed, 21 Jul 2010 16:52:15 -0400
Subject: [Rd] Plot window does not update in embedded code
In-Reply-To: <666FFFC7-DA21-4EFE-80D2-B83F481D42B9@r-project.org>
References: <AANLkTilIxmc9rrIs2NXLna_wXzQPLFH4tDHK-FOgk3gZ@mail.gmail.com>
	<201007212145.44130.thomas.friedrichsmeier@ruhr-uni-bochum.de>
	<666FFFC7-DA21-4EFE-80D2-B83F481D42B9@r-project.org>
Message-ID: <9A7974C8-BC2F-4D3C-B67C-730710419614@r-project.org>


On Jul 21, 2010, at 4:28 PM, Simon Urbanek wrote:

> Use
> R_CheckUserInterrupt()
> 

Actually, the above is true but assumes that you're running R's REPL and not your own R_ReadConsole (it will work even in your ReadConsole but unix handlers are not run in that case so only some events will work).


> The code below is very fragile and unix-specific.
> 

That is true, too, but even after R_ProcessEvenrts refactorization the handlers are still-unix specific so I stand corrected and you still have to run handlers manually (note that you don't need PolledEvents anymore since they are part of the handlers).

Cheers,
Simon


>> 
>> On Wednesday 21 July 2010, Jan van der Laan wrote:
>>> How do I ensure that the windows keep being updated?
>> 
>> in RKWard we run the following periodically during idle phases:
>> 
>> 
>> // this basically copied from R's unix/sys-std.c (Rstd_ReadConsole)
>> #ifndef Q_WS_WIN
>> 	for (;;) {
>> 		fd_set *what;
>> 		what = R_checkActivityEx(R_wait_usec > 0 ? R_wait_usec : 50, 1, 
>> Rf_onintr);
>> 		R_runHandlers(R_InputHandlers, what);
>> 		if (what == NULL) break;
>> 	}
>> 	/* This seems to be needed to make Rcmdr react to events. Has this always 
>> been the case? It was commented out for a long time, without anybody noticing. 
>> */
>> 	R_PolledEvents ();
>> #else
>> 	R_ProcessEvents();
>> #endif
>> 
>> 
>> Regards
>> Thomas
>> ______________________________________________
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>> https://stat.ethz.ch/mailman/listinfo/r-devel
> 
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[Rd] Plot window does not update in embedded code
Simon Urbanek