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RedHat 9 (Linux i386) - man page for vwprintw (redhat section 3X)

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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(3S)].   In  effect,  the string that would be output by printf is output instead as
       though waddstr were used on the given window.

       The vwprintw and wv_printw routines are analogous to vprintf [see printf(3S)] and  perform
       a wprintw using a variable argument list.  The third argument is a va_list, a pointer to a
       list of arguments, as defined 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 completion.

       The  XSI  Curses  standard,  Issue  4 describes these functions.  The function 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       marked TO BE WITHDRAWN, and is to be replaced by a function vw_printw using the 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 vwprintw 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(3S), vprintf(3S)

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