doc/html/man/curs_getstr.3x.html

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  30   * @Id: curs_getstr.3x,v 1.19 2010/12/04 18:36:44 tom Exp @
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  39 <H1>curs_getstr 3x</H1>
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  41 <PRE>
  42 <!-- Manpage converted by man2html 3.0.1 -->
  43 <STRONG><A HREF="curs_getstr.3x.html">curs_getstr(3x)</A></STRONG>                                         <STRONG><A HREF="curs_getstr.3x.html">curs_getstr(3x)</A></STRONG>
  44
  45
  46
  47
  48 </PRE>
  49 <H2>NAME</H2><PRE>
  50        <STRONG>getstr</STRONG>, <STRONG>getnstr</STRONG>, <STRONG>wgetstr</STRONG>, <STRONG>wgetnstr</STRONG>, <STRONG>mvgetstr</STRONG>, <STRONG>mvgetnstr</STRONG>,
  51        <STRONG>mvwgetstr</STRONG>, <STRONG>mvwgetnstr</STRONG> - accept character strings from
  52        <STRONG>curses</STRONG> terminal keyboard
  53
  54
  55 </PRE>
  56 <H2>SYNOPSIS</H2><PRE>
  57        <STRONG>#include</STRONG> <STRONG>&lt;curses.h&gt;</STRONG>
  58
  59        <STRONG>int</STRONG> <STRONG>getstr(char</STRONG> <STRONG>*str);</STRONG>
  60        <STRONG>int</STRONG> <STRONG>getnstr(char</STRONG> <STRONG>*str,</STRONG> <STRONG>int</STRONG> <STRONG>n);</STRONG>
  61        <STRONG>int</STRONG> <STRONG>wgetstr(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>char</STRONG> <STRONG>*str);</STRONG>
  62        <STRONG>int</STRONG> <STRONG>wgetnstr(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>char</STRONG> <STRONG>*str,</STRONG> <STRONG>int</STRONG> <STRONG>n);</STRONG>
  63        <STRONG>int</STRONG> <STRONG>mvgetstr(int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>x,</STRONG> <STRONG>char</STRONG> <STRONG>*str);</STRONG>
  64        <STRONG>int</STRONG> <STRONG>mvwgetstr(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>x,</STRONG> <STRONG>char</STRONG> <STRONG>*str);</STRONG>
  65        <STRONG>int</STRONG> <STRONG>mvgetnstr(int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>x,</STRONG> <STRONG>char</STRONG> <STRONG>*str,</STRONG> <STRONG>int</STRONG> <STRONG>n);</STRONG>
  66        <STRONG>int</STRONG> <STRONG>mvwgetnstr(WINDOW</STRONG> <STRONG>*,</STRONG> <STRONG>int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>x,</STRONG> <STRONG>char</STRONG> <STRONG>*str,</STRONG> <STRONG>int</STRONG> <STRONG>n);</STRONG>
  67
  68
  69 </PRE>
  70 <H2>DESCRIPTION</H2><PRE>
  71        The  function <STRONG>getstr</STRONG> is equivalent to a series of calls to
  72        <STRONG>getch</STRONG>, until a newline or carriage return is received (the
  73        terminating  character  is  not  included  in the returned
  74        string).  The resulting value is placed in the area point-
  75        ed to by the character pointer <EM>str</EM>.
  76
  77        <STRONG>wgetnstr</STRONG>  reads  at  most  <EM>n</EM> characters, thus preventing a
  78        possible overflow of the input buffer.  Any attempt to en-
  79        ter more characters (other than the terminating newline or
  80        carriage return) causes a beep.  Function keys also  cause
  81        a  beep  and are ignored.  The <STRONG>getnstr</STRONG> function reads from
  82        the <EM>stdscr</EM> default window.
  83
  84        The user's erase and kill characters are interpreted.   If
  85        keypad   mode   is   on   for  the  window,  <STRONG>KEY_LEFT</STRONG>  and
  86        <STRONG>KEY_BACKSPACE</STRONG> are both considered equivalent to the user's
  87        kill character.
  88
  89        Characters  input are echoed only if <STRONG>echo</STRONG> is currently on.
  90        In that case, backspace is echoed as deletion of the  pre-
  91        vious character (typically a left motion).
  92
  93
  94 </PRE>
  95 <H2>RETURN VALUE</H2><PRE>
  96        All routines return the integer <STRONG>ERR</STRONG> upon failure and an <STRONG>OK</STRONG>
  97        (SVr4 specifies only "an integer value  other  than  <STRONG>ERR</STRONG>")
  98        upon successful completion.
  99
 100        X/Open defines no error conditions.
 101
 102        In this implementation, these functions return an error if
 103        the window pointer is null,  or  if  its  timeout  expires
 104        without having any data.
 105
 106        This  implementation  provides an extension as well.  If a
 107        SIGWINCH interrupts the function, it will  return  <STRONG>KEY_RE-</STRONG>
 108        <STRONG>SIZE</STRONG> rather than <STRONG>OK</STRONG> or <STRONG>ERR</STRONG>.
 109
 110        Functions  with a "mv" prefix first perform a cursor move-
 111        ment using <STRONG>wmove</STRONG>, and return an error if the  position  is
 112        outside the window, or if the window pointer is null.
 113
 114
 115 </PRE>
 116 <H2>NOTES</H2><PRE>
 117        Note that <STRONG>getstr</STRONG>, <STRONG>mvgetstr</STRONG>, and <STRONG>mvwgetstr</STRONG> may be macros.
 118
 119
 120 </PRE>
 121 <H2>PORTABILITY</H2><PRE>
 122        These  functions are described in the XSI Curses standard,
 123        Issue 4.  They  read  single-byte  characters  only.   The
 124        standard  does  not define any error conditions.  This im-
 125        plementation returns ERR if the window pointer is null, or
 126        if the lower-level <STRONG>wgetch</STRONG> call returns an ERR.
 127
 128        SVr3  and early SVr4 curses implementations did not reject
 129        function keys; the SVr4.0 documentation claimed that "spe-
 130        cial  keys"  (such  as  function keys, "home" key, "clear"
 131        key, <EM>etc</EM>.) are "interpreted", without giving details.   It
 132        lied.   In  fact,  the  `character'  value appended to the
 133        string by those implementations was  predictable  but  not
 134        useful  (being,  in  fact, the low-order eight bits of the
 135        key's KEY_ value).
 136
 137        The functions  <STRONG>getnstr</STRONG>,  <STRONG>mvgetnstr</STRONG>,  and  <STRONG>mvwgetnstr</STRONG>  were
 138        present but not documented in SVr4.
 139
 140
 141 </PRE>
 142 <H2>SEE ALSO</H2><PRE>
 143        <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_getch.3x.html">curs_getch(3x)</A></STRONG>, <STRONG><A HREF="curs_variables.3x.html">curs_variables(3x)</A></STRONG>.
 144
 145
 146
 147                                                         <STRONG><A HREF="curs_getstr.3x.html">curs_getstr(3x)</A></STRONG>
 148 </PRE>
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