Capture frame, the first entry returned by (mouse-position)

Capture frame, the first entry returned by (mouse-position)

[wilnerthomas--- via Users list for the GNU Emacs text editor]

I would like to capture the frame where the mouse is located, the first entry
 returned by (mouse-position).  How can I do it?

Re: Capture frame, the first entry returned by (mouse-position)

[Eli Zaretskii]

> Date: Sat, 17 Sep 2022 19:25:30 +0200 (CEST)
> From: wilnerthomas--- via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org>
> 
> I would like to capture the frame where the mouse is located, the first entry
>  returned by (mouse-position).  How can I do it?

What do you mean by "capture" in this case?

Re: Capture frame, the first entry returned by (mouse-position)

[wilnerthomas--- via Users list for the GNU Emacs text editor]

Sep 17, 2022, 17:39 by eliz@gnu.org:

>> Date: Sat, 17 Sep 2022 19:25:30 +0200 (CEST)
>> From: wilnerthomas--- via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org>
>>
>> I would like to capture the frame where the mouse is located, the first entry
>>  returned by (mouse-position).  How can I do it?
>>
>
> What do you mean by "capture" in this case?
>
To get it so I can pass it to functions that require frame as argument.

Re: Capture frame, the first entry returned by (mouse-position)

[Eli Zaretskii]

> Date: Sat, 17 Sep 2022 19:53:54 +0200 (CEST)
> From: wilnerthomas@tutanota.com
> Cc: help-gnu-emacs@gnu.org
> 
> Sep 17, 2022, 17:39 by eliz@gnu.org:
> 
> >> Date: Sat, 17 Sep 2022 19:25:30 +0200 (CEST)
> >> From: wilnerthomas--- via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org>
> >>
> >> I would like to capture the frame where the mouse is located, the first entry
> >>  returned by (mouse-position).  How can I do it?
> >>
> >
> > What do you mean by "capture" in this case?
> >
> To get it so I can pass it to functions that require frame as argument.

Just 'car (mouse-position)' should do.  I'm not even sure why you
asked, it's so obvious...

Re: Capture frame, the first entry returned by (mouse-position)

[Eli Zaretskii]

> Date: Sat, 17 Sep 2022 20:58:49 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> 
> Just 'car (mouse-position)' should do.

That should have been '(car (mouse-position))', of course.

Re: Capture frame, the first entry returned by (mouse-position)

[wilnerthomas--- via Users list for the GNU Emacs text editor]

Sep 17, 2022, 18:00 by eliz@gnu.org:

>> Date: Sat, 17 Sep 2022 20:58:49 +0300
>> From: Eli Zaretskii <eliz@gnu.org>
>>
>> Just 'car (mouse-position)' should do.
>>
>
> That should have been '(car (mouse-position))', of course.
>
It is quite obvious, but then when you want to pass it to a function that requires
FRAME, do you pass it as a string?  

Re: Capture frame, the first entry returned by (mouse-position)

[Eli Zaretskii]

> Date: Sat, 17 Sep 2022 20:24:25 +0200 (CEST)
> From: wilnerthomas@tutanota.com
> Cc: help-gnu-emacs@gnu.org
> 
> Sep 17, 2022, 18:00 by eliz@gnu.org:
> 
> >> Date: Sat, 17 Sep 2022 20:58:49 +0300
> >> From: Eli Zaretskii <eliz@gnu.org>
> >>
> >> Just 'car (mouse-position)' should do.
> >>
> >
> > That should have been '(car (mouse-position))', of course.
> >
> It is quite obvious, but then when you want to pass it to a function that requires
> FRAME, do you pass it as a string?  

Why a string?  Just pass the value of '(car (mouse-position))'.
That's the frame object those functions want.

Re: Capture frame, the first entry returned by (mouse-position)

[wilnerthomas--- via Users list for the GNU Emacs text editor]

Sep 17, 2022, 18:35 by eliz@gnu.org:

>> Date: Sat, 17 Sep 2022 20:24:25 +0200 (CEST)
>> From: wilnerthomas@tutanota.com
>> Cc: help-gnu-emacs@gnu.org
>>
>> Sep 17, 2022, 18:00 by eliz@gnu.org:
>>
>> >> Date: Sat, 17 Sep 2022 20:58:49 +0300
>> >> From: Eli Zaretskii <eliz@gnu.org>
>> >>
>> >> Just 'car (mouse-position)' should do.
>> >>
>> >
>> > That should have been '(car (mouse-position))', of course.
>> >
>> It is quite obvious, but then when you want to pass it to a function that requires
>> FRAME, do you pass it as a string? 
>>
>
> Why a string?  Just pass the value of '(car (mouse-position))'.
> That's the frame object those functions want.
>
I would like to pass it for making the initial frame, so cannot just call (car (mouse-position))
for frame in (set-frame-position frame nlft ntop).

Re: Capture frame, the first entry returned by (mouse-position)

[Christopher Dimech]

> Sent: Sunday, September 18, 2022 at 6:35 AM
> From: "Eli Zaretskii" <eliz@gnu.org>
> To: help-gnu-emacs@gnu.org
> Subject: Re: Capture frame, the first entry returned by (mouse-position)
>
> > Date: Sat, 17 Sep 2022 20:24:25 +0200 (CEST)
> > From: wilnerthomas@tutanota.com
> > Cc: help-gnu-emacs@gnu.org
> > 
> > Sep 17, 2022, 18:00 by eliz@gnu.org:
> > 
> > >> Date: Sat, 17 Sep 2022 20:58:49 +0300
> > >> From: Eli Zaretskii <eliz@gnu.org>
> > >>
> > >> Just 'car (mouse-position)' should do.
> > >>
> > >
> > > That should have been '(car (mouse-position))', of course.
> > >
> > It is quite obvious, but then when you want to pass it to a function that requires
> > FRAME, do you pass it as a string?  
> 
> Why a string?  Just pass the value of '(car (mouse-position))'.
> That's the frame object those functions want.
 
Frame objects seem quite complicated to handle, they are long with spaces in them.

Re: Capture frame, the first entry returned by (mouse-position)

[Eli Zaretskii]

> Date: Sat, 17 Sep 2022 20:39:16 +0200 (CEST)
> From: wilnerthomas@tutanota.com
> Cc: help-gnu-emacs@gnu.org
> 
> Sep 17, 2022, 18:35 by eliz@gnu.org:
> 
> > Why a string?  Just pass the value of '(car (mouse-position))'.
> > That's the frame object those functions want.
> >
> I would like to pass it for making the initial frame, so cannot just call (car (mouse-position))
> for frame in (set-frame-position frame nlft ntop).

If the frame was not yet created, you cannot call set-frame-position
for it, because the frame doesn't exist yet.  You should instead set
the 'top' and 'left' parameters of initial-frame-alist.

Re: Capture frame, the first entry returned by (mouse-position)

[Eli Zaretskii]

> From: Christopher Dimech <dimech@gmx.com>
> Cc: help-gnu-emacs@gnu.org
> Date: Sat, 17 Sep 2022 20:41:49 +0200
> 
> Frame objects seem quite complicated to handle, they are long with spaces in them.

That's not the frame, that's its printed representation.

This is a good time to re-read the immortal part of Alice in
Wonderland where it explains the difference between a thing, the name
of the thing, and the name of the name.

RE: [External] : Re: Capture frame, the first entry returned by (mouse-position)

[Drew Adams]

> This is a good time to re-read the immortal part of Alice in
> Wonderland where it explains the difference between a thing, the name
> of the thing, and the name of the name.

+1