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From: "Jan D." <jan.h.d@swipnet.se>
To: Stefan Monnier <monnier@iro.umontreal.ca>,
	martin rudalics <rudalics@gmx.at>
Cc: 19988@debbugs.gnu.org, Tassilo Horn <tsdh@gnu.org>
Subject: bug#19988: 25.0.50; Drag events ending in different frame
Date: Mon, 09 Mar 2015 08:53:43 +0100	[thread overview]
Message-ID: <54FD5187.1070902@swipnet.se> (raw)
In-Reply-To: <jwvvbiadc6q.fsf-monnier+emacsbugs@gnu.org>

Stefan Monnier skrev den 2015-03-09 05:34:
>>> If one of the two is the top window (i.e. the one that's actually
>>> visible), then we should use that one,
>> Detecting whether "one of the two is the top window (i.e. the one that's
>> actually visible)" requires access to the Z order of windows.
>
> Not exactly: since this should be done by the C code, it can ask the
> window-system, which is the "current window under the mouse pointer".
> The result depends on Z ordering, but Emacs doesn't need to know that
> Z ordering.
>
>> The event structure can only contain what we put into it.  Which window
>> would you put into this structure after you leave the frame containing
>> the window where the start event occurred?
>
> The GUI window that's under the mouse pointer (according to the
> window-system).
>

XQueryPointer gives you the window.  But for drag-and-drop (depending on 
what protocol is being used), you also need to check if that window 
supports drag-and-drop.

	Jan D.






  reply	other threads:[~2015-03-09  7:53 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-03 14:30 bug#19988: 25.0.50; Drag events ending in different frame Tassilo Horn
2015-03-03 20:27 ` Eli Zaretskii
2015-03-04  4:28   ` Stefan Monnier
2015-03-04  7:03     ` Tassilo Horn
2015-03-04 17:22       ` Eli Zaretskii
2015-03-04 21:09         ` Tassilo Horn
2015-03-04 22:58           ` Stefan Monnier
2015-03-05  8:05             ` martin rudalics
2015-03-05 17:05             ` Eli Zaretskii
2015-03-05  3:37           ` Eli Zaretskii
2015-03-05  7:19             ` Tassilo Horn
2015-03-05 17:02               ` Eli Zaretskii
2015-03-05 20:07                 ` Tassilo Horn
2015-03-05 20:15                   ` Eli Zaretskii
2015-03-06  7:12                     ` Tassilo Horn
2015-03-06 14:13                       ` Eli Zaretskii
2015-03-06 16:09                       ` Drew Adams
2015-03-06 18:55                         ` martin rudalics
2015-03-05 17:00             ` Eli Zaretskii
2015-03-05 20:01               ` Tassilo Horn
2015-03-05  8:05           ` martin rudalics
2015-03-04 17:19     ` Eli Zaretskii
2015-03-04 15:10 ` martin rudalics
2015-03-04 21:14   ` Tassilo Horn
2015-03-05  8:06     ` martin rudalics
2015-03-06 14:37       ` Stefan Monnier
2015-03-06 18:55         ` martin rudalics
2015-03-06 20:19           ` Stefan Monnier
2015-03-06 21:31             ` martin rudalics
2015-03-07  0:49               ` Stefan Monnier
2015-03-07  9:41                 ` martin rudalics
2015-03-09  4:34                   ` Stefan Monnier
2015-03-09  7:53                     ` Jan D. [this message]
2015-03-09 10:38                       ` martin rudalics

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