.\"***************************************************************************
-.\" Copyright (c) 1998-2000,2003 Free Software Foundation, Inc. *
+.\" Copyright (c) 1998-2007,2010 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: curs_slk.3x,v 1.12 2003/05/10 20:33:49 jmc Exp $
+.\" $Id: curs_slk.3x,v 1.22 2010/12/04 18:38:55 tom Exp $
.TH curs_slk 3X ""
+.na
+.hy 0
.SH NAME
-\fBslk_init\fR, \fBslk_set\fR, \fBslk_refresh\fR,
-\fBslk_noutrefresh\fR, \fBslk_label\fR,
-\fBslk_clear\fR, \fBslk_restore\fR, \fBslk_touch\fR,
-\fBslk_attron\fR, \fBslk_attrset\fR, \fBslk_attroff\fR,
-\fBslk_attr_on\fR, \fBslk_attr_set\fR, \fBslk_attr_off\fR,
-\fBslk_attr\fR, \fBslk_color\fR - \fBcurses\fR soft label routines
+\fBslk_init\fR,
+\fBslk_set\fR,
+\fBslk_wset\fR,
+\fBslk_refresh\fR,
+\fBslk_noutrefresh\fR,
+\fBslk_label\fR,
+\fBslk_clear\fR,
+\fBslk_restore\fR,
+\fBslk_touch\fR,
+\fBslk_attron\fR,
+\fBslk_attrset\fR,
+\fBslk_attroff\fR,
+\fBslk_attr_on\fR,
+\fBslk_attr_set\fR,
+\fBslk_attr_off\fR,
+\fBslk_attr\fR,
+\fBslk_color\fR \- \fBcurses\fR soft label routines
+.ad
+.hy
.SH SYNOPSIS
\fB#include <curses.h>\fR
-
+.sp
\fBint slk_init(int fmt);\fR
.br
\fBint slk_set(int labnum, const char *label, int fmt);\fR
.br
\fBint slk_attr_off(const attr_t attrs, void * opts);\fR
.br
-\fBint slk_attr_set(const attr_t attrs,\fR
-.br
- \fBshort color_pair_number, void* opts);\fR
+\fBint slk_attr_set(const attr_t attrs, short color_pair, void* opts);\fR
.br
\fBattr_t slk_attr(void);\fR
.br
-\fBint slk_color(short color_pair_number);\fR
+\fBint slk_color(short color_pair);\fR
+.br
+\fBint slk_wset(int labnum, const wchar_t *label, int fmt);\fR
.br
.SH DESCRIPTION
The slk* functions manipulate the set of soft function-key labels that exist on
-many terminals. For those terminals that do not have soft labels,
+many terminals.
+For those terminals that do not have soft labels,
\fBcurses\fR takes over the bottom line of \fBstdscr\fR, reducing the size of
-\fBstdscr\fR and the variable \fBLINES\fR. \fBcurses\fR standardizes on eight
-labels of up to eight characters each. In addition to this, the ncurses
+\fBstdscr\fR and the variable \fBLINES\fR.
+\fBcurses\fR standardizes on eight
+labels of up to eight characters each.
+In addition to this, the ncurses
implementation supports a mode where it simulates 12 labels of up to five
-characters each. This is most common for todays PC like enduser devices.
-Please note that ncurses simulates this mode by taking over up to two lines at
-the bottom of the screen, it doesn't try to use any hardware support for this
+characters each.
+This is useful for today's PC-like enduser devices.
+ncurses simulates this mode by taking over up to two lines at
+the bottom of the screen;
+it does not try to use any hardware support for this
mode.
-
+.PP
The \fBslk_init\fR routine must be called before \fBinitscr\fR or \fBnewterm\fR
-is called. If \fBinitscr\fR eventually uses a line from \fBstdscr\fR to
-emulate the soft labels, then \fIfmt\fR determines how the labels are arranged
-on the screen. Setting \fIfmt\fR to \fB0\fR indicates a 3-2-3 arrangement of
-the labels, \fB1\fR indicates a 4-4 arrangement and \fB2\fR indicates the
-PC like 4-4-4 mode. If \fBfmt\fR is set to \fB3\fR, it is again the PC like
-4-4-4 mode, but in addition an index line is generated, helping the user to
+is called.
+If \fBinitscr\fR eventually uses a line from \fBstdscr\fR to
+emulate the soft labels,
+then \fIfmt\fR determines how the labels are arranged on the screen:
+.RS
+.TP 3
+.B 0
+indicates a 3\-2\-3 arrangement of
+the labels.
+.TP 3
+.B 1
+indicates a 4\-4 arrangement
+.TP 3
+.B 2
+indicates the PC-like 4\-4\-4 mode.
+.TP 3
+.B 3
+is again the PC-like 4\-4\-4 mode,
+but in addition an index line is generated, helping the user to
identify the key numbers easily.
-
-The \fBslk_set\fR routine requires \fIlabnum\fR to be a label number,
-from \fB1\fR to \fB8\fR (resp. \fB12\fR); \fIlabel\fR must be the string
-to be put on the label, up to eight (resp. five) characters in length.
-A null string or a null pointer sets up a blank label. \fIfmt\fR is either
-\fB0\fR, \fB1\fR, or \fB2\fR, indicating whether the label is to be
+.RE
+.PP
+The \fBslk_set\fR routine
+(and the \fBslk_wset\fR routine for the wide-character library)
+has three parameters:
+.RS
+.TP 5
+.I labnum
+is the label number, from \fB1\fR to \fB8\fR
+(12 for \fIfmt\fP in \fBslk_init\fP is \fB2\fP or \fB3\fP);
+.TP
+.I label
+is be the string to put on the label,
+up to eight
+(five for \fIfmt\fP in \fBslk_init\fP is \fB2\fP or \fB3\fP)
+characters in length.
+A null string or a null pointer sets up a blank label.
+.TP
+.I fmt
+is either
+\fB0\fR, \fB1\fR, or \fB2\fR, indicating whether the label is to be
left-justified, centered, or right-justified, respectively, within the
label.
-
+.RE
+.PP
The \fBslk_refresh\fR and \fBslk_noutrefresh\fR routines correspond to
the \fBwrefresh\fR and \fBwnoutrefresh\fR routines.
-
+.PP
The \fBslk_label\fR routine returns the current label for label number
\fIlabnum\fR, with leading and trailing blanks stripped.
-
+.PP
The \fBslk_clear\fR routine clears the soft labels from the screen.
-
+.PP
The \fBslk_restore\fR routine restores the soft labels to the screen
after a \fBslk_clear\fR has been performed.
-
+.PP
The \fBslk_touch\fR routine forces all the soft labels to be output
the next time a \fBslk_noutrefresh\fR is performed.
-
+.PP
The \fBslk_attron\fR, \fBslk_attrset\fR, \fBslk_attroff\fR and \fBslk_attr\fR
routines correspond to \fBattron\fR, \fBattrset\fR, \fBattroff\fR and \fBattr_get\fR.
They have an effect only if soft labels are simulated on the bottom line of
-the screen. The default highlight for soft keys is A_STANDOUT (as in
+the screen.
+The default highlight for soft keys is A_STANDOUT (as in
System V curses, which does not document this fact).
-
-The \fBslk_color\fR routine corresponds to \fBcolor_set\fR. It has an effect only
+.PP
+The \fBslk_color\fR routine corresponds to \fBcolor_set\fR.
+It has an effect only
if soft labels are simulated on the bottom line of the screen.
-
+.
.SH RETURN VALUE
These routines return \fBERR\fR upon failure and OK (SVr4 specifies only "an
-integer value other than \fBERR\fR") upon successful completion. \fBslk_attr\fR
+integer value other than \fBERR\fR") upon successful completion.
+.PP
+X/Open defines no error conditions.
+In this implementation
+.RS
+.TP 5
+\fBslk_attr\fR
returns the attribute used for the soft keys.
-
-\fBslk_label\fR returns \fBNULL\fR on error.
+.TP 5
+.na
+.hy 0
+\fBslk_attroff\fP, \fBslk_attron\fP, \fBslk_clear\fP, \fBslk_noutrefresh\fP, \fBslk_refresh\fP, \fBslk_touch\fP
+.ad
+.hy
+return an error
+if the terminal or the softkeys were not initialized.
+.TP 5
+\fBslk_attrset\fP
+returns an error
+if the terminal or the softkeys were not initialized.
+.TP 5
+\fBslk_attr_set\fP
+returns an error
+if the terminal or the softkeys were not initialized, or
+the color pair is outside the range 0..COLOR_PAIRS\-1,
+or opts is not null.
+.TP 5
+\fBslk_color\fP
+returns an error
+if the terminal or the softkeys were not initialized, or
+the color pair is outside the range 0..COLOR_PAIRS\-1.
+.TP 5
+\fBslk_init\fR
+returns an error
+if the format parameter is outside the range 0..3.
+.TP 5
+\fBslk_label\fR
+returns \fBNULL\fR on error.
+.TP 5
+\fBslk_set\fP
+returns an error
+if the terminal or the softkeys were not initialized, or
+the \fIlabnum\fP parameter is outside the range of label counts, or
+if the format parameter is outside the range 0..2, or if
+memory for the labels cannot be allocated.
+.RE
.SH NOTES
Most applications would use \fBslk_noutrefresh\fR because a
\fBwrefresh\fR is likely to follow soon.
.SH PORTABILITY
-The XSI Curses standard, Issue 4, describes these functions. It changes the
+The XSI Curses standard, Issue 4, describes these functions.
+It changes the
argument type of the attribute-manipulation functions \fBslk_attron\fR,
\fBslk_attroff\fR, \fBslk_attrset\fR to be \fBattr_t\fR, and adds \fBconst\fR
-qualifiers. The format codes \fB2\fR and \fB3\fR for \fBslk_init()\fR and the
+qualifiers.
+The format codes \fB2\fR and \fB3\fR for \fBslk_init()\fR and the
function \fBslk_attr\fR are specific to ncurses.
.SH SEE ALSO
-\fBcurses\fR(3X), \fBcurs_attr\fR(3X), \fBcurs_initscr\fR(3X), \fBcurs_refresh\fR(3X)
-.\"#
-.\"# The following sets edit modes for GNU EMACS
-.\"# Local Variables:
-.\"# mode:nroff
-.\"# fill-column:79
-.\"# End:
+\fBcurses\fR(3X),
+\fBcurs_attr\fR(3X),
+\fBcurs_initscr\fR(3X),
+\fBcurs_refresh\fR(3X),
+\fBcurs_variables\fR(3X).
projects / ncurses.git / blobdiff