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bug#4843: creating menus

From: Jan D.
Subject: bug#4843: creating menus
Date: Mon, 02 Nov 2009 09:20:18 +0100
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv: Gecko/20090915 Thunderbird/3.0b4

On 2009-11-02 02:44, Chong Yidong wrote:
It can be because you are now using a newer Gtk+ version.  Please use
report-emacs-bug so we can see that at once instead of having to ask.

If indeed you are using Gtk+, it is due to the introduction of native windows.
To see if this is the case, start emacs with
and try again.

I don't have any recollection of this problem.  Could you elaborate?  If
the menus don't work properly unless GDK_NATIVE_WINDOWS=1, maybe we
should set it unconditionally.

Native windows is Gtk having internal windows that map to the same X window. This confuses Emacs, mostly when it tries to map X events for windows to frames. I.e. there might not be separate X windows in the menu that is children to the frame X window. See bug #4122.

I'd rather not set GDK_NATIVE_WINDOWS as it disables the optimizations that native windows give. It may also be removed in a future Gtk+ release, so it isn't a good solution.

It isn't hard to fix emacs 22 as well, but does this bug warrant a new 22 release? Maybe, as distributions like Ubuntu still ships 22 (see the linked Ubuntu bug in #4122). A 23-release soonish is not wrong though :-)

        Jan D.

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