Base version of ncurses-5.7 library
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+<HTML>
+<HEAD>
+<TITLE>curs_scanw 3x</TITLE>
+<link rev=made href="mailto:bug-ncurses@gnu.org">
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+</HEAD>
+<BODY>
+<H1>curs_scanw 3x</H1>
+<HR>
+<PRE>
+<!-- Manpage converted by man2html 3.0.1 -->
+<STRONG><A HREF="curs_scanw.3x.html">curs_scanw(3x)</A></STRONG> <STRONG><A HREF="curs_scanw.3x.html">curs_scanw(3x)</A></STRONG>
+
+
+
+
+</PRE>
+<H2>NAME</H2><PRE>
+ <STRONG>scanw</STRONG>, <STRONG>wscanw</STRONG>, <STRONG>mvscanw</STRONG>, <STRONG>mvwscanw</STRONG>, <STRONG>vwscanw</STRONG>, <STRONG>vw_scanw</STRONG> - con-
+ vert formatted input from a <STRONG>curses</STRONG> window
+
+
+</PRE>
+<H2>SYNOPSIS</H2><PRE>
+ <STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
+
+ <STRONG>int</STRONG> <STRONG>scanw(char</STRONG> <STRONG>*fmt,</STRONG> <STRONG>...);</STRONG>
+ <STRONG>int</STRONG> <STRONG>wscanw(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>char</STRONG> <STRONG>*fmt,</STRONG> <STRONG>...);</STRONG>
+ <STRONG>int</STRONG> <STRONG>mvscanw(int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>x,</STRONG> <STRONG>char</STRONG> <STRONG>*fmt,</STRONG> <STRONG>...);</STRONG>
+ <STRONG>int</STRONG> <STRONG>mvwscanw(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>x,</STRONG> <STRONG>char</STRONG> <STRONG>*fmt,</STRONG> <STRONG>...);</STRONG>
+ <STRONG>int</STRONG> <STRONG>vw_scanw(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>char</STRONG> <STRONG>*fmt,</STRONG> <STRONG>va_list</STRONG> <STRONG>varglist);</STRONG>
+ <STRONG>int</STRONG> <STRONG>vwscanw(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>char</STRONG> <STRONG>*fmt,</STRONG> <STRONG>va_list</STRONG> <STRONG>varglist);</STRONG>
+
+
+</PRE>
+<H2>DESCRIPTION</H2><PRE>
+ The <STRONG>scanw</STRONG>, <STRONG>wscanw</STRONG> and <STRONG>mvscanw</STRONG> routines are analogous to
+ <STRONG>scanf</STRONG> [see <STRONG><A HREF="scanf.3.html">scanf(3)</A></STRONG>]. The effect of these routines is as
+ though <STRONG>wgetstr</STRONG> were called on the window, and the result-
+ ing line used as input for <STRONG><A HREF="sscanf.3.html">sscanf(3)</A></STRONG>. Fields which do not
+ map to a variable in the <EM>fmt</EM> field are lost.
+
+ The <STRONG>vwscanw</STRONG> and <STRONG>vw_scanw</STRONG> routines are analogous to <STRONG>vscanf</STRONG>.
+ They perform a <STRONG>wscanw</STRONG> using a variable argument list. The
+ third argument is a <EM>va</EM><STRONG>_</STRONG><EM>list</EM>, a pointer to a list of argu-
+ ments, as defined in <STRONG><stdarg.h></STRONG>.
+
+
+</PRE>
+<H2>RETURN VALUE</H2><PRE>
+ <STRONG>vwscanw</STRONG> returns <STRONG>ERR</STRONG> on failure and an integer equal to the
+ number of fields scanned on success.
+
+ Applications may use the return value from the <STRONG>scanw</STRONG>,
+ <STRONG>wscanw</STRONG>, <STRONG>mvscanw</STRONG> and <STRONG>mvwscanw</STRONG> routines to determine the
+ number of fields which were mapped in the call.
+
+
+</PRE>
+<H2>PORTABILITY</H2><PRE>
+ The XSI Curses standard, Issue 4 describes these func-
+ tions. The function <STRONG>vwscanw</STRONG> is marked TO BE WITHDRAWN,
+ and is to be replaced by a function <STRONG>vw_scanw</STRONG> using the
+ <STRONG><stdarg.h></STRONG> interface. The Single Unix Specification, Ver-
+ sion 2 states that <STRONG>vw_scanw</STRONG> is preferred to <STRONG>vwscanw</STRONG> since
+ the latter requires including <STRONG><varargs.h></STRONG>, which cannot be
+ used in the same file as <STRONG><stdarg.h></STRONG>. This implementation
+ uses <STRONG><stdarg.h></STRONG> for both, because that header is included
+ in <STRONG><curses.h</STRONG>>.
+
+ Both XSI and The Single Unix Specification, Version 2
+ state that these functions return ERR or OK. Since the
+ underlying <STRONG>scanf</STRONG> can return the number of items scanned,
+ and the SVr4 code was documented to use this feature, this
+ is probably an editing error which was introduced in XSI,
+ rather than being done intentionally. Portable applica-
+ tions should only test if the return value is ERR, since
+ the OK value (zero) is likely to be misleading. One pos-
+ sible way to get useful results would be to use a "%n"
+ conversion at the end of the format string to ensure that
+ something was processed.
+
+
+</PRE>
+<H2>SEE ALSO</H2><PRE>
+ <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_getstr.3x.html">curs_getstr(3x)</A></STRONG>, <STRONG><A HREF="curs_printw.3x.html">curs_printw(3x)</A></STRONG>, <STRONG><A HREF="scanf.3.html">scanf(3)</A></STRONG>
+
+
+
+ <STRONG><A HREF="curs_scanw.3x.html">curs_scanw(3x)</A></STRONG>
+</PRE>
+<HR>
+<ADDRESS>
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