Re: [Rd] X11 device windows are spawned with empty WM_NAME property

From: Drew Frank <>
Date: Fri, 17 Jun 2011 14:05:01 -0700

On Fri, Jun 17, 2011 at 1:57 PM, Drew Frank <> wrote:

> On Fri, Jun 17, 2011 at 7:26 AM, peter dalgaard <> wrote:

>> On Jun 17, 2011, at 15:32 , Prof Brian Ripley wrote:
>> >>>
>> >>> Is this behavior intended?  Would be it be reasonable to instead create
>> >>> windows with a generic name like "R Graphics" prior to updating them with
>> >>> the device number and active/inactive status?
>> >
>> > Yes, no.
>> >
>> Well, "yes, maybe", I'd say. If the WM insists on looking at the title, it makes some pragmatic sense for the user to set it to a generic name that the WM can recognize.
>> However, on revisiting this, the obvious fix/workaround is just to set
>> X11.options(title="R Graphics: Device %d")
>> and the user can do this in his/her startup files. No need to inflict it on every user with any WM.
>> --
>> Peter Dalgaard
>> Center for Statistics, Copenhagen Business School
>> Solbjerg Plads 3, 2000 Frederiksberg, Denmark
>> Phone: (+45)38153501
>> Email:  Priv:

Thank you Peter and Brian for your replies.  The X11.options workaround is effective, and I'd be happy to make use of it.

That said, after reading your replies I agree that the "correct" thing to do would be for the WM to match on WM_CLASS, which is currently not set.  I checked out the R-devel trunk and was preparing a patch to set WM_CLASS when I noticed that Brian already committed code to do this in r56008.  However, the code is wrapped in an "#ifndef USE_Xt", with the comment "/* For those too idle to make use of Xt (PR#14588) */". When I compile, USE_Xt is set so this code isn't executed and WM_CLASS is never set.  Is it supposed to be set somewhere else?

Thank you,
Drew mailing list Received on Fri 17 Jun 2011 - 21:07:36 GMT

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