bug#7398: 23.2.90; Missing descenders in menu and toolbar tooltips

[Eli Zaretskii]

> From: "Drew Adams" <drew.adams@oracle.com>
> Date: Sun, 14 Nov 2010 06:05:14 -0800
> Cc: 
> 
> > This is on Microsoft Windows 7.
> 
> Confirmed also for Windows XP.

It is part of a larger problem with Emacs tooltips on MS-Windows: we
somehow miscalculate the dimensions of the tooltip.  You can see that
even with the default font, if you slowly move the mouse pointer from
left to right above the mode line: some of the tooltips that pop up
have truncated text.

There's a TODO comment about this in w32fns.c:x-show-tip.

FWIW, this problem exists at least since Emacs 23.1.