.\"***************************************************************************
-.\" Copyright (c) 1998,2000 Free Software Foundation, Inc. *
+.\" Copyright (c) 1998-2006,2010 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_printw.3x,v 1.11 2000/07/01 20:11:32 tom Exp $
+.\" $Id: curs_printw.3x,v 1.20 2010/12/04 18:40:45 tom Exp $
.TH curs_printw 3X ""
+.na
+.hy 0
.SH NAME
\fBprintw\fR,
\fBwprintw\fR,
\fBmvprintw\fR,
\fBmvwprintw\fR,
-\fBvwprintw\fR, \fBvw_printw\fR - print formatted output in \fBcurses\fR windows
+\fBvwprintw\fR, \fBvw_printw\fR \- print formatted output in \fBcurses\fR windows
+.ad
+.hy
.SH SYNOPSIS
\fB#include <curses.h>\fR
-
-\fBint printw(char *fmt\fR [\fB, arg\fR] \fB...);\fR
+.sp
+\fBint printw(const char *fmt, ...);\fR
.br
-\fBint wprintw(WINDOW *win, char *fmt\fR [\fB, arg\fR] \fB...);\fR
+\fBint wprintw(WINDOW *win, const char *fmt, ...);\fR
.br
-\fBint mvprintw(int y, int x, char *fmt\fR [\fB, arg\fR] \fB...);\fR
+\fBint mvprintw(int y, int x, const char *fmt, ...);\fR
.br
-\fBint mvwprintw(WINDOW *win, int y, int x,\fR
- \fBchar *fmt\fR [\fB, arg]\fR ...);
-
-\fB#include <varargs.h>\fR
+\fBint mvwprintw(WINDOW *win, int y, int x, const char *fmt, ...);\fR
.br
-\fBint vwprintw(WINDOW *win, char *fmt, varglist);\fR
+\fBint vwprintw(WINDOW *win, const char *fmt, va_list varglist);\fR
.br
-\fBint vw_printw(WINDOW *win, char *fmt, varglist);\fR
+\fBint vw_printw(WINDOW *win, const char *fmt, va_list varglist);\fR
.br
.SH DESCRIPTION
The \fBprintw\fR, \fBwprintw\fR, \fBmvprintw\fR and \fBmvwprintw\fR
-routines are analogous to \fBprintf\fR [see \fBprintf\fR(3S)]. In
+routines are analogous to \fBprintf\fR [see \fBprintf\fR(3)]. In
effect, the string that would be output by \fBprintf\fR is output
instead as though \fBwaddstr\fR were used on the given window.
-
-The \fBvwprintw\fR routine is analogous to \fBvprintf\fR [see
-\fBprintf\fR(3S)] and performs a \fBwprintw\fR using a variable
-argument list. The third argument is a \fBva_list\fR, a pointer to a
-list of arguments, as defined in \fB<varargs.h>\fR.
+.PP
+The \fBvwprintw\fR and \fBwv_printw\fR routines are analogous
+to \fBvprintf\fR [see \fBprintf\fR(3)]
+and perform a \fBwprintw\fR using a variable argument list.
+The third argument is a \fBva_list\fR, a pointer to a
+list of arguments, as defined in \fB<stdarg.h>\fR.
.SH RETURN VALUE
Routines that return an integer return \fBERR\fR upon failure and \fBOK\fR
(SVr4 only specifies "an integer value other than \fBERR\fR") upon successful
completion.
+.PP
+X/Open defines no error conditions.
+In this implementation,
+an error may be returned if it cannot allocate enough memory for the
+buffer used to format the results.
+It will return an error if the window pointer is null.
+.PP
+Functions with a "mv" prefix first perform a cursor movement using
+\fBwmove\fP, and return an error if the position is outside the window,
+or if the window pointer is null.
.SH PORTABILITY
The XSI Curses standard, Issue 4 describes these functions. The function
\fBvwprintw\fR is marked TO BE WITHDRAWN, and is to be replaced by a function
\fBvw_printw\fR using the \fB<stdarg.h>\fR interface.
+The Single Unix Specification, Version 2 states that
+\fBvw_printw\fR is preferred to \fBvwprintw\fR since the latter requires
+including \fB<varargs.h>\fR, which
+cannot be used in the same file as \fB<stdarg.h>\fR.
+This implementation uses \fB<stdarg.h>\fR for both, because that header
+is included in \fB<curses.h\fR>.
.SH SEE ALSO
-\fBcurses\fR(3X), \fBprintf\fR(3S), \fBvprintf(3S)\fR
-.\"#
-.\"# The following sets edit modes for GNU EMACS
-.\"# Local Variables:
-.\"# mode:nroff
-.\"# fill-column:79
-.\"# End:
+\fBcurses\fR(3X), \fBprintf\fR(3), \fBvprintf(3)\fR
projects / ncurses.git / blobdiff