Re: Add function to make frame topmost?

[David De La Harpe Golden <david@harpegolden.net>]

Lennart Borgman wrote:

> Thanks. Yes, it looks easy to add the w32 part. (And there is no BOTTOMMOST.)
> 
> I think this is useful for reminders/appointments, log tail buffers etc.

Uhm.

If, say, the _user wanted_ an emacs frame showing a log tail buffer 
always visible, setting always-on-top on the emacs frame might be 
something the user might choose to do (which might be what you meant by 
"useful for log tail buffers", granted).

A frame showing a log tail buffer in particular that has just spat out 
some output might use the simple demands-attention* to draw some mild 
attention to itself, without being so presumptuous as to request 
activation or raise-frame itself (or worse always-on-top itself).

Come to think of it, ringing the bell should probably demands-attention, 
so that something (beep)ing in a frame that's not visible isn't missed.

*
On my system, the interpretation of demands-attention for a frame that's 
not immediately visible is that its task bar entry is bolded and starts 
gently pulsing blue. demands attention? :

"""
_NET_WM_STATE_DEMANDS_ATTENTION indicates that some action in or with 
the window happened. For example, it may be set by the Window Manager if 
the window requested activation but the Window Manager refused it, or 
the application may set it if it finished some work. This state may be 
set by both the Client and the Window Manager. It should be unset by the 
Window Manager when it decides the window got the required attention 
(usually, that it got activated).
"""

;; could be recast as a frame parameter if introduced,
;; just a test function.
(defun x-set-frame-wants-love (&optional frame)
     (x-send-client-message
      frame 0 frame "_NET_WM_STATE" 32
      '(1 "_NET_WM_STATE_DEMANDS_ATTENTION" 0 1)))

(progn
   (sleep-for 10)
   (x-set-frame-wants-love))

C-x C-e
<minimise frame, wait 10 secs>