In man/files.texi I am rewriting
When Emacs is built with a suitable GUI toolkit, it pops up the
standard File Selection dialog of that toolkit instead of prompting for
the file name in the minibuffer. On Unix and GNU/Linux platforms,
Emacs
does that when built with LessTif and Motif toolkits; on MS-Windows,
the
GUI version does that by default.
as follows:
When Emacs is built with a suitable GUI toolkit, commands invoked
with the mouse use standard File Selection dialog of that toolkit
instead of prompting for the file name in the minibuffer. On Unix and
GNU/Linux platforms, Emacs does that when built with GTK, LessTif, and
Motif toolkits; on MS-Windows, the GUI version does that by default.
However, is that correct nowadays? Or is more changed needed?