Re: How to make dragging with mouse 1 not do highlighting or marking?

[Ian Kelling <ianowl@gmail.com>]

On 12/26/2012 06:11 PM, J. David Boyd wrote:
> Ian Kelling <ianowl@gmail.com> writes:
>
>> When I hold down mouse-1 and move it around in a buffer, I just want
>> the cursor to follow the mouse as I move it. So far, my best guess is
>> to copy mouse-drag-track function and remove mark related code.
>>
>> Thanks,
>> Ian Kelling
>
> Then, why hold down mouse-1?  I mean, the cursor already follow the
> mouse around as you move it....
>

Because I do not want to highlight or select a region. The general idea is to be 
able to more easily identify exactly which character the mouse pointer would act on.

I've changed what I want a bit, and need some help from the elisp gurus out there. 
I want the character that the mouse pointer would act on highlighted all the time, 
not just when I press a button. I was able to get it working when a button was 
pressed down using mouse.el code as an example (and mouse+.el). However, that code 
doesn't work in the background so to speak if I try to just run it from my init file.

The critical example from mouse.el is this:

(track-mouse
              (while (progn (setq event  (read-event))
                            (or (mouse-movement-p event)
                                (memq (car-safe event) '(switch-frame 
select-window))))

How can I run code in which I would update an overlay on all on mouse movement 
events?