Function: message-or-box
message-or-box is a function defined in editfns.c.
Signature
(message-or-box FORMAT-STRING &rest ARGS)
Documentation
Display a message in a dialog box or in the echo area.
If this command was invoked with the mouse, use a dialog box if
use-dialog-box is non-nil.
Otherwise, use the echo area.
The first argument is a format control string, and the rest are data
to be formatted under control of the string. See format-message for
details.
If the first argument is nil or the empty string, clear any existing message; let the minibuffer contents show.
Source Code
// Defined in /usr/src/emacs/src/editfns.c
{
if ((NILP (last_nonmenu_event) || CONSP (last_nonmenu_event))
&& use_dialog_box)
return Fmessage_box (nargs, args);
return Fmessage (nargs, args);
}