path: root/man/curs_printw.3x
diff options
Diffstat (limited to 'man/curs_printw.3x')
1 files changed, 44 insertions, 8 deletions
diff --git a/man/curs_printw.3x b/man/curs_printw.3x
index 4d060d73cd1a..4980517275d5 100644
--- a/man/curs_printw.3x
+++ b/man/curs_printw.3x
@@ -27,7 +27,7 @@
.\" authorization. *
-.\" $Id: curs_printw.3x,v 1.25 2020/02/02 23:34:34 tom Exp $
+.\" $Id: curs_printw.3x,v 1.28 2020/10/24 09:22:45 tom Exp $
.TH curs_printw 3X ""
.ie \n(.g .ds `` \(lq
.el .ds `` ``
@@ -50,19 +50,19 @@
\fB#include <curses.h>\fR
-\fBint printw(const char *fmt, ...);\fR
+\fBint printw(const char *\fP\fIfmt\fP\fB, ...);\fR
-\fBint wprintw(WINDOW *win, const char *fmt, ...);\fR
+\fBint wprintw(WINDOW *\fP\fIwin\fP\fB, const char *\fP\fIfmt\fP\fB, ...);\fR
-\fBint mvprintw(int y, int x, const char *fmt, ...);\fR
+\fBint mvprintw(int \fP\fIy\fP\fB, int \fP\fIx\fP\fB, const char *\fP\fIfmt\fP\fB, ...);\fR
-\fBint mvwprintw(WINDOW *win, int y, int x, const char *fmt, ...);\fR
+\fBint mvwprintw(WINDOW *\fP\fIwin\fP\fB, int \fP\fIy\fP\fB, int \fP\fIx\fP\fB, const char *\fP\fIfmt\fP\fB, ...);\fR
-\fBint vw_printw(WINDOW *win, const char *fmt, va_list varglist);\fR
+\fBint vw_printw(WINDOW *\fP\fIwin\fP\fB, const char *\fP\fIfmt\fP\fB, va_list \fP\fIvarglist\fP\fB);\fR
/* obsolete */
-\fBint vwprintw(WINDOW *win, const char *fmt, va_list varglist);\fR
+\fBint vwprintw(WINDOW *\fP\fIwin\fP\fB, const char *\fP\fIfmt\fP\fB, va_list \fP\fIvarglist\fP\fB);\fR
The \fBprintw\fR, \fBwprintw\fR, \fBmvprintw\fR and \fBmvwprintw\fR
routines are analogous to \fBprintf\fR [see \fBprintf\fR(3)].
@@ -70,7 +70,7 @@ 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 and \fBwv_printw\fR routines are analogous
+The \fBvwprintw\fR and \fBvw_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
@@ -89,6 +89,42 @@ It will return an error if the window pointer is null.
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.
+While \fBprintw\fP was implemented in 4BSD,
+it was unused until 4.2BSD (which used it in games).
+That early version of curses was before the ANSI C standard.
+It did not use <varargs.h>, though that was available.
+In 1991 (a couple of years after SVr4 was generally available,
+and after the C standard was published),
+other developers updated the library,
+using <stdarg.h> internally in 4.4BSD curses.
+Even with this improvement,
+BSD curses did not use function prototypes (or even declare
+functions) in the <curses.h> header until 1992.
+SVr2 documented
+tersely as \*(``printf on \fIstdscr\fP\*('' and
+tersely as \*(``printf on \fIwin\fP\*('', respectively.
+SVr3 added
+\fBmvprintw\fP, and
+\fBmvwprintw\fP, with a three-line summary saying that they were analogous
+to \fBprintf\fP(3),
+explaining that the string which would be output from \fBprintf\fP(3) would
+instead be output using \fBwaddstr\fP on the given window.
+SVr3 also added \fBvwprintw\fP, saying that the third parameter
+is a \fBva_list\fP, defined in <varargs.h>,
+and referring the reader to the manual pages for \fIvarargs\fP and
+\fIvprintf\fP for detailed descriptions.
+SVr4 added no new variations of \fBprintw\fP,
+but provided for using <varargs.h> or <stdarg.h> to define the \fBva_list\fP
+X/Open Curses added \fBvw_printw\fP to replace \fBvwprintw\fP,
+stating that its \fBva_list\fP definition requires <stdarg.h>.
In this implementation, \fBvw_printw\fP and \fBvwprintw\fP are equivalent,
to support legacy applications.