Menus detachment feature.

Menus detachment feature.

[Sergey Organov]

Hello,

I suddenly found that my emacs (GNU Emacs 23.2.1, running on
Debian/Gnome) is capable of "detaching" some sub-menus and putting them
into separate frames. For example, if I click "File" in the main menu,
submenu appears containing dashed line at the top, and if I click on
that dashed line, entire "File" submenu appears in a separate frame.

I can't find anything about the feature by googling for it. Could somebody
please point me to relevant documentation?

Thanks.

-- 
Sergey.

Re: Menus detachment feature.

[Anssi Saari]

Sergey Organov <sorganov@gmail.com> writes:

> I suddenly found that my emacs (GNU Emacs 23.2.1, running on
> Debian/Gnome) is capable of "detaching" some sub-menus and putting them
> into separate frames.

Could it be this is a Gnome feature? I don't see anything like that on
my systems.

Re: Menus detachment feature.

[Gian Uberto Lauri]

It's a feature of the GTK toolkit.

--
Gian Uberto

On 01.10.2014, at 12:47, Anssi Saari <as@sci.fi> wrote:

> Sergey Organov <sorganov@gmail.com> writes:
> 
>> I suddenly found that my emacs (GNU Emacs 23.2.1, running on
>> Debian/Gnome) is capable of "detaching" some sub-menus and putting them
>> into separate frames.
> 
> Could it be this is a Gnome feature? I don't see anything like that on
> my systems.
> 

Re: Menus detachment feature.

[Michael Heerdegen]

Anssi Saari <as@sci.fi> writes:

> Could it be this is a Gnome feature? I don't see anything like that on
> my systems.

I think it's a GTK feature.  And AFAIK it can't be controlled from
within Emacs.

Re: Menus detachment feature.

[Sergey Organov]

Anssi Saari <as@sci.fi> writes:

> Sergey Organov <sorganov@gmail.com> writes:
>
>> I suddenly found that my emacs (GNU Emacs 23.2.1, running on
>> Debian/Gnome) is capable of "detaching" some sub-menus and putting them
>> into separate frames.
>
> Could it be this is a Gnome feature? I don't see anything like that on
> my systems.

It must be both Gnome and Emacs feature then, as some of Emacs submenus
do have it, and some don't. For example, in "Options", the "Line
Wrapping in this Buffer" submenu has the dashed line, while neither
"Mule (Multilingual Environment)" nor "Customize Emacs" have one.

I can't figure any template, as some submenus of non-detachable menus
could be detachable, and vice versa. Moreover, ["Tools" "Spell
Checking"] has this active dashed line right in the middle (between 
"Complete Word Fragment" and "Complete Word"), not at the top.

The latter makes one think it's some special kind of separator, but I
fail to see something relevant in 22.17.1.3 Menu Separators.

-- 
Sergey.