release/src/router/libncurses/doc/html/man/mitem_current.3x.html

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  31   * @Id: mitem_current.3x,v 1.13 2010/12/04 18:40:45 tom Exp @
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  40 <H1>mitem_current 3x</H1>
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  43 <!-- Manpage converted by man2html 3.0.1 -->
  44 <STRONG><A HREF="mitem_current.3x.html">mitem_current(3x)</A></STRONG>                                     <STRONG><A HREF="mitem_current.3x.html">mitem_current(3x)</A></STRONG>
  45
  46
  47
  48
  49 </PRE>
  50 <H2>NAME</H2><PRE>
  51        <STRONG>mitem_current</STRONG> - set and get current_menu_item
  52
  53
  54 </PRE>
  55 <H2>SYNOPSIS</H2><PRE>
  56        <STRONG>#include</STRONG> <STRONG>&lt;menu.h&gt;</STRONG>
  57        int set_current_item(MENU *menu, const ITEM *item);
  58        ITEM *current_item(const MENU *menu);
  59        int set_top_row(MENU *menu, int row);
  60        int top_row(const MENU *menu);
  61        int item_index(const ITEM *item);
  62
  63
  64 </PRE>
  65 <H2>DESCRIPTION</H2><PRE>
  66        The  function  <STRONG>set_current_item</STRONG> sets the current item (the
  67        item on  which  the  menu  cursor  is  positioned).   <STRONG>cur-</STRONG>
  68        <STRONG>rent_item</STRONG>  returns  a  pointer  to the current item in the
  69        given menu.
  70
  71        The function <STRONG>set_top_row</STRONG> sets the top row of the  menu  to
  72        show  the  given  row  (the top row is initially 0, and is
  73        reset to this value whenever the <STRONG>O_ROWMAJOR</STRONG> option is tog-
  74        gled).   The  item  leftmost on the given row becomes cur-
  75        rent.  The function <STRONG>top_row</STRONG> returns the number of the  top
  76        menu row being displayed.
  77
  78        The function <STRONG>item_index</STRONG> returns the (zero-origin) index of
  79        <EM>item</EM> in the menu's item pointer list.
  80
  81
  82 </PRE>
  83 <H2>RETURN VALUE</H2><PRE>
  84        <STRONG>current_item</STRONG> returns a pointer (which may  be  <STRONG>NULL</STRONG>).   It
  85        does not set errno.
  86
  87        <STRONG>top_row</STRONG>  and  <STRONG>item_index</STRONG>  return  <STRONG>ERR</STRONG>  (the general <STRONG>curses</STRONG>
  88        error value) if their <EM>menu</EM> parameter is <STRONG>NULL</STRONG>.
  89
  90        <STRONG>set_current_item</STRONG> and <STRONG>set_top_row</STRONG> return one of the follow-
  91        ing:
  92
  93        <STRONG>E_OK</STRONG> The routine succeeded.
  94
  95        <STRONG>E_BAD_ARGUMENT</STRONG>
  96             Routine  detected  an incorrect or out-of-range argu-
  97             ment.
  98
  99        <STRONG>E_BAD_STATE</STRONG>
 100             Routine was called from an initialization or termina-
 101             tion function.
 102
 103        <STRONG>E_NOT_CONNECTED</STRONG>
 104             No items are connected to the menu.
 105
 106        <STRONG>E_SYSTEM_ERROR</STRONG>
 107             System error occurred (see <STRONG>errno</STRONG>).
 108
 109
 110 </PRE>
 111 <H2>SEE ALSO</H2><PRE>
 112        <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="menu.3x.html">menu(3x)</A></STRONG>.
 113
 114
 115 </PRE>
 116 <H2>NOTES</H2><PRE>
 117        The header file <STRONG>&lt;menu.h&gt;</STRONG> automatically includes the header
 118        file <STRONG>&lt;curses.h&gt;</STRONG>.
 119
 120
 121 </PRE>
 122 <H2>PORTABILITY</H2><PRE>
 123        These routines emulate the System V  menu  library.   They
 124        were not supported on Version 7 or BSD versions.
 125
 126        The  SVr4 menu library documentation specifies the <STRONG>top_row</STRONG>
 127        and <STRONG>index_item</STRONG> error value as -1 (which is  the  value  of
 128        <STRONG>ERR</STRONG>).
 129
 130
 131 </PRE>
 132 <H2>AUTHORS</H2><PRE>
 133        Juergen  Pfeifer.   Manual  pages  and  adaptation for new
 134        curses by Eric S. Raymond.
 135
 136
 137
 138                                                       <STRONG><A HREF="mitem_current.3x.html">mitem_current(3x)</A></STRONG>
 139 </PRE>
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