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.\" $Id: curs_printw.3x,v 1.17 2006/12/24 16:05:17 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
.ad
.hy
.SH SYNOPSIS
\fB#include <curses.h>\fR
.sp
\fBint printw(const char *fmt, ...);\fR
.br
\fBint wprintw(WINDOW *win, const char *fmt, ...);\fR
.br
\fBint mvprintw(int y, int x, const char *fmt, ...);\fR
.br
\fBint mvwprintw(WINDOW *win, int y, int x, const char *fmt, ...);\fR
.br
\fBint vwprintw(WINDOW *win, const char *fmt, va_list varglist);\fR
.br
\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(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.
.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.
.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\fBvwprintw\fR is marked TO BE WITHDRAWN, and is to be replaced by a function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(3), \fBvprintf(3)\fR
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