.\"***************************************************************************
-.\" Copyright (c) 1998-2008,2010 Free Software Foundation, Inc. *
+.\" Copyright 2018-2020,2021 Thomas E. Dickey *
+.\" Copyright 1998-2010,2017 Free Software Foundation, Inc. *
.\" *
.\" Permission is hereby granted, free of charge, to any person obtaining a *
.\" copy of this software and associated documentation files (the *
.\" authorization. *
.\"***************************************************************************
.\"
-.\" $Id: menu_driver.3x,v 1.19 2010/10/02 23:10:49 tom Exp $
+.\" $Id: menu_driver.3x,v 1.30 2021/12/25 21:49:32 tom Exp $
.TH menu_driver 3X ""
.de bP
-.IP \(bu 4
+.ie n .IP \(bu 4
+.el .IP \(bu 2
..
.SH NAME
-\fBmenu_driver\fR \- command-processing loop of the menu system
+\fBmenu_driver\fP \- command-processing loop of the menu system
.SH SYNOPSIS
-\fB#include <menu.h>\fR
-.br
-int menu_driver(MENU *menu, int c);
+\fB#include <menu.h>\fP
+.sp
+\fBint menu_driver(MENU *\fP\fImenu\fP\fB, int \fP\fIc\fP\fB);\fP
.br
.SH DESCRIPTION
Once a menu has been posted (displayed), you should funnel input events to it
-through \fBmenu_driver\fR. This routine has three major input cases:
+through \fBmenu_driver\fP. This routine has three major input cases:
.bP
The input is a form navigation request.
Navigation request codes are constants defined in \fB<form.h>\fP,
-which are distinct from the key- and character codes returned by \fBwgetch\fP.
+which are distinct from the key- and character codes
+returned by \fBwgetch\fP(3X).
.bP
The input is a printable character.
Printable characters (which must be positive, less than 256) are
.PP
If the second argument is a printable character, the code appends
it to the pattern buffer and attempts to move to the next item matching
-the new pattern. If there is no such match, \fBmenu_driver\fR returns
-\fBE_NO_MATCH\fR and deletes the appended character from the buffer.
+the new pattern.
+If there is no such match, \fBmenu_driver\fP returns
+\fBE_NO_MATCH\fP and deletes the appended character from the buffer.
.PP
If the second argument is one of the above pre-defined requests, the
corresponding action is performed.
the menu cursor is positioned to that item.
.bP
If you double-click an item a REQ_TOGGLE_ITEM
-is generated and \fBE_UNKNOWN_COMMAND\fR is returned.
+is generated and \fBE_UNKNOWN_COMMAND\fP is returned.
This return value makes sense,
because a double click usually means that an item-specific action should
be returned.
application specific command should be executed.
.bP
If a translation
-into a request was done, \fBmenu_driver\fR returns the result of this request.
+into a request was done, \fBmenu_driver\fP returns the result of this request.
.PP
-If you clicked outside the user window or the mouse event could not be translated
-into a menu request an \fBE_REQUEST_DENIED\fR is returned.
+If you clicked outside the user window
+or the mouse event could not be translated
+into a menu request an \fBE_REQUEST_DENIED\fP is returned.
.SS APPLICATION-DEFINED COMMANDS
.PP
If the second argument is neither printable nor one of the above
-pre-defined menu requests or KEY_MOUSE, the drive assumes it is an application-specific
-command and returns \fBE_UNKNOWN_COMMAND\fR. Application-defined commands
-should be defined relative to \fBMAX_COMMAND\fR, the maximum value of these
+pre-defined menu requests or KEY_MOUSE,
+the drive assumes it is an application-specific
+command and returns \fBE_UNKNOWN_COMMAND\fP. Application-defined commands
+should be defined relative to \fBMAX_COMMAND\fP, the maximum value of these
pre-defined requests.
.SH RETURN VALUE
-\fBmenu_driver\fR return one of the following error codes:
+\fBmenu_driver\fP return one of the following error codes:
.TP 5
.B E_OK
The routine succeeded.
.TP 5
.B E_SYSTEM_ERROR
-System error occurred (see \fBerrno\fR).
+System error occurred (see \fBerrno\fP(3)).
.TP 5
.B E_BAD_ARGUMENT
Routine detected an incorrect or out-of-range argument.
.B E_REQUEST_DENIED
The menu driver could not process the request.
.SH SEE ALSO
-\fBcurses\fR(3X),
-\fBmenu\fR(3X),
-\fBgetch\fR(3X).
+\fBcurses\fP(3X),
+\fBgetch\fP(3X),
+\fBmenu\fP(3X).
.SH NOTES
-The header file \fB<menu.h>\fR automatically includes the header files
-\fB<curses.h>\fR.
+The header file \fB<menu.h>\fP automatically includes the header files
+\fB<curses.h>\fP.
.SH PORTABILITY
-These routines emulate the System V menu library. They were not supported on
-Version 7 or BSD versions. The support for mouse events is ncurses specific.
+These routines emulate the System V menu library.
+They were not supported on
+Version 7 or BSD versions.
+The support for mouse events is ncurses specific.
.SH AUTHORS
-Juergen Pfeifer. Manual pages and adaptation for new curses by Eric
-S. Raymond.
-.\"#
-.\"# The following sets edit modes for GNU EMACS
-.\"# Local Variables:
-.\"# mode:nroff
-.\"# fill-column:79
-.\"# End:
+Juergen Pfeifer.
+Manual pages and adaptation for new curses by Eric S. Raymond.
projects / ncurses.git / blobdiff