X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=doc%2Fhtml%2Fman%2Fcurs_printw.3x.html;h=cb50d7b7ee445b611ea6f9cecd54e49be8d34176;hp=f6da12390bbe40d859b77eca07d16ad721136f7e;hb=c0f109a299a82a33c16bd7af942a12ce9aefaaf0;hpb=ed646e3f683083e787c6ba773364401dc9fa9d40 diff --git a/doc/html/man/curs_printw.3x.html b/doc/html/man/curs_printw.3x.html index f6da1239..cb50d7b7 100644 --- a/doc/html/man/curs_printw.3x.html +++ b/doc/html/man/curs_printw.3x.html @@ -1,6 +1,7 @@
- +The printw, wprintw, mvprintw and mvwprintw routines are analogous to @@ -88,18 +91,54 @@ the window pointer is null. +
+ While printw 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 improve- + ment, BSD curses did not use function prototypes (or even declare func- + tions) in the <curses.h> header until 1992. + + SVr2 documented printw, wprintw tersely as "printf on stdscr" and + tersely as "printf on win", respectively. + + SVr3 added mvprintw, and mvwprintw, with a three-line summary saying + that they were analogous to printf(3), explaining that the string which + would be output from printf(3) would instead be output using waddstr on + the given window. SVr3 also added vwprintw, saying that the third pa- + rameter is a va_list, defined in <varargs.h>, and referring the reader + to the manual pages for varargs and vprintf for detailed descriptions. + + SVr4 added no new variations of printw, but provided for using + <varargs.h> or <stdarg.h> to define the va_list type. + + X/Open Curses added vw_printw to replace vwprintw, stating that its + va_list definition requires <stdarg.h>. + +
- 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 The func- - tion vwprintw is marked TO BE WITHDRAWN, and is to be replaced by a - function vw_printw using the 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>. + In this implementation, vw_printw and vwprintw are equivalent, to sup- + port legacy applications. However, the latter (vwprintw) is obsolete: + + o The XSI Curses standard, Issue 4 described 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. + + o 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>. + + o X/Open Curses, Issue 5 (December 2007) marked vwprintw (along with + vwscanw and the termcap interface) as withdrawn.
- curses(3x), printf(3), vprintf(3). + curses(3x), curs_addstr(3x), curs_scanw(3x), curs_termcap(3x), + printf(3), vprintf(3). @@ -111,6 +150,7 @@