bug#69662: 30.0.50; PGTK Window system supports drag-and-drop but doesn't define x-begin-drag

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: bjorn.bidar@thaodan.de,  69662@debbugs.gnu.org
> Date: Fri, 15 Mar 2024 20:45:52 +0800
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > What does this mean in practice, though?  Does it mean drag-and-drop
> > doesn't work at all in the PGTK builds?  Or only some aspects of that
> > don't work?  We should at least document the limitations.
> 
> The implication is that it's not possible to drag files or text _from_
> Emacs into other programs, which is documented in the doc strings of the
> relevant minor modes and functions.

Which doc strings mention that?