curs_printw(3x) curs_printw(3x)
printw, wprintw, mvprintw, mvwprintw, vwprintw, vw_printw - print
formatted output in curses windows
#include <curses.h>
int printw(const char *fmt, ...);
int wprintw(WINDOW *win, const char *fmt, ...);
int mvprintw(int y, int x, const char *fmt, ...);
int mvwprintw(WINDOW *win, int y, int x, const char *fmt, ...);
int vwprintw(WINDOW *win, const char *fmt, va_list varglist);
int vw_printw(WINDOW *win, const char *fmt, va_list varglist);
The printw, wprintw, mvprintw and mvwprintw routines are analogous to
printf [see printf(3)]. In effect, the string that would be output by
printf is output instead as though waddstr were used on the given win-
dow.
The vwprintw and wv_printw routines are analogous to vprintf [see
printf(3)] and perform a wprintw using a variable argument list. The
third argument is a va_list, a pointer to a list of arguments, as de-
fined in <stdarg.h>.
Routines that return an integer return ERR upon failure and OK (SVr4
only specifies "an integer value other than ERR") upon successful com-
pletion.
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.
Functions with a "mv" prefix first perform a cursor movement using
wmove, and return an error if the position is outside the window, or if
the window pointer is null.
The XSI Curses standard, Issue 4 describes these functions. The func-
tion vwprintw is marked TO BE WITHDRAWN, and is to be replaced by a
function vw_printw using the <stdarg.h> interface. The Single Unix
Specification, Version 2 states that vw_printw is preferred to vw-
printw since the latter requires including <varargs.h>, which cannot be
used in the same file as <stdarg.h>. This implementation uses
<stdarg.h> for both, because that header is included in <curses.h>.
curses(3x), printf(3), vprintf(3).
curs_printw(3x)