bug#47581: 27.1; tab-bar missed mouse clicks on MS-Windows

[Eli Zaretskii]

> From: Juri Linkov <juri@linkov.net>
> Cc: ioannis.kappas@gmail.com,  47581@debbugs.gnu.org
> Date: Mon, 12 Apr 2021 19:07:50 +0300
> 
> >> Sorry, I don't understand the need to remove the highlighting code.
> >> Before the removal, the tab-bar button images reacted to mouse pointer
> >> movements, and highlighted the buttons under the mouse pointer
> >> using the pressed/released state DRAW_IMAGE_SUNKEN/RAISED.
> >
> > I didn't see any such effect, and couldn't find the code which
> > supports this highlighting.  Please point out what I missed.
> 
> There was a clearly visible indication with raised images
> on mouse pointer movements over the tab close buttons.

Only on the tab close buttons?  I thought you were talking about the
button as a whole: those don't react to mouse movements, at least
here.

Anyway, I've restored the mouse sensitivity of the tab-close buttons.