'\" t
+.\"***************************************************************************
+.\" Copyright (c) 1998-2006,2010 Free Software Foundation, Inc. *
+.\" *
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+.\" copy of this software and associated documentation files (the *
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+.\" distribute, distribute with modifications, sublicense, and/or sell *
+.\" copies of the Software, and to permit persons to whom the Software is *
+.\" furnished to do so, subject to the following conditions: *
+.\" *
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+.\" in all copies or substantial portions of the Software. *
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+.\"***************************************************************************
+.\"
+.\" $Id: mitem_current.3x,v 1.13 2010/12/04 18:40:45 tom Exp $
.TH mitem_current 3X ""
.SH NAME
-\fBmitem_current\fR - set and get current_menu_item
+\fBmitem_current\fR \- set and get current_menu_item
.SH SYNOPSIS
\fB#include <menu.h>\fR
.br
The function \fBset_current_item\fR sets the current item (the item on which
the menu cursor is positioned). \fBcurrent_item\fR returns a pointer to the
current item in the given menu.
-
+.PP
The function \fBset_top_row\fR sets the top row of the menu to show the given
row (the top row is initially 0, and is reset to this value whenever the
\fBO_ROWMAJOR\fR option is toggled). The item leftmost on the given row
becomes current. The function \fBtop_row\fR returns the number of the top menu
row being displayed.
-
+.PP
The function \fBitem_index\fR returns the (zero-origin) index of \fIitem\fR in
the menu's item pointer list.
.SH RETURN VALUE
-\fBcurrent_item\fR returns \fBNULL\fR on error.
-
-\fBtop_row\fR and \fBitem_index\fR return \fBERR\fR (the general \fBcurses\fB
-error value) on error.
-
+\fBcurrent_item\fR returns a pointer (which may be \fBNULL\fR).
+It does not set errno.
+.PP
+\fBtop_row\fR and \fBitem_index\fR return \fBERR\fR (the general \fBcurses\fR
+error value) if their \fImenu\fP parameter is \fBNULL\fP.
+.PP
\fBset_current_item\fR and \fBset_top_row\fR return one of the following:
.TP 5
-\fBE_OK\fR
+.B E_OK
The routine succeeded.
.TP 5
-\fBE_SYSTEM_ERROR\fR
-System error occurred (see \fBerrno\fR).
-.TP 5
-\fBE_BAD_ARGUMENT\fR
+.B E_BAD_ARGUMENT
Routine detected an incorrect or out-of-range argument.
.TP 5
-\fBE_BAD_STATE\fR
+.B E_BAD_STATE
Routine was called from an initialization or termination function.
.TP 5
-\fBE_NOT_CONNECTED\fR
+.B E_NOT_CONNECTED
No items are connected to the menu.
+.TP 5
+.B E_SYSTEM_ERROR
+System error occurred (see \fBerrno\fR).
.SH SEE ALSO
\fBcurses\fR(3X), \fBmenu\fR(3X).
.SH NOTES
.SH PORTABILITY
These routines emulate the System V menu library. They were not supported on
Version 7 or BSD versions.
-
+.PP
The SVr4 menu library documentation specifies the \fBtop_row\fR and
-\fBindex_item\fR error value as -1 (which is the value of \fBERR\fR).
+\fBindex_item\fR error value as \-1 (which is the value of \fBERR\fR).
.SH AUTHORS
Juergen Pfeifer. Manual pages and adaptation for new curses by Eric
S. Raymond.
-.\"#
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