Re: make-pointer-invisible on Windows

[Eli Zaretskii <eliz@gnu.org>]

> Date: Wed, 24 Jun 2015 11:17:58 +0200
> From: martin rudalics <rudalics@gmx.at>
> 
> I intend to apply the attached patch in order to fix this problem for
> the Windows build (see Bug#6105 and Bug#12922).  Comments welcome.

Thanks.

> +static void
> +w32_toggle_invisible_pointer (struct frame *f, bool invisible)
> +{
> +  block_input ();
> +
> +  if (f->pointer_invisible != invisible)
> +    {
> +      f->pointer_invisible = invisible;
> +      SET_FRAME_GARBAGED (f); <<<<<<<<<<<<<<<<<<<<<<<
> +    }

That sounds excessive: I think it means that every self-inserting
character will trigger thorough redisplay of the frame.  Why do you
need this?  Is there any problem without marking the frame garbaged?

Also, what about the equivalent of the X code that makes the pointer
visible on focus-in events -- don't we need that on MS-Windows?