contrib/ncurses-5.4/menu/m_items.c

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  28
  29 /****************************************************************************
  30  *   Author:  Juergen Pfeifer, 1995,1997                                    *
  31  ****************************************************************************/
  32
  33 /***************************************************************************
  34 * Module m_items                                                           *
  35 * Connect and disconnect items to and from menus                           *
  36 ***************************************************************************/
  37
  38 #include "menu.priv.h"
  39
  40 MODULE_ID("$Id: m_items.c,v 1.12 2003/11/08 20:50:58 tom Exp $")
  41
  42 /*---------------------------------------------------------------------------
  43 |   Facility      :  libnmenu
  44 |   Function      :  int set_menu_items(MENU *menu, ITEM **items)
  45 |
  46 |   Description   :  Sets the item pointer array connected to menu.
  47 |
  48 |   Return Values :  E_OK           - success
  49 |                    E_POSTED       - menu is already posted
  50 |                    E_CONNECTED    - one or more items are already connected
  51 |                                     to another menu.
  52 |                    E_BAD_ARGUMENT - An incorrect menu or item array was
  53 |                                     passed to the function
  54 +--------------------------------------------------------------------------*/
  55 NCURSES_EXPORT(int)
  56 set_menu_items (MENU * menu, ITEM ** items)
  57 {
  58   if (!menu || (items && !(*items)))
  59     RETURN(E_BAD_ARGUMENT);
  60
  61   if ( menu->status & _POSTED )
  62     RETURN(E_POSTED);
  63
  64   if (menu->items)
  65     _nc_Disconnect_Items(menu);
  66
  67   if (items)
  68     {
  69       if(!_nc_Connect_Items( menu, items ))
  70         RETURN(E_CONNECTED);
  71     }
  72
  73   menu->items = items;
  74   RETURN(E_OK);
  75 }
  76
  77 /*---------------------------------------------------------------------------
  78 |   Facility      :  libnmenu
  79 |   Function      :  ITEM **menu_items(const MENU *menu)
  80 |
  81 |   Description   :  Returns a pointer to the item pointer array of the menu
  82 |
  83 |   Return Values :  NULL on error
  84 +--------------------------------------------------------------------------*/
  85 NCURSES_EXPORT(ITEM **)
  86 menu_items (const MENU *menu)
  87 {
  88   return(menu ? menu->items : (ITEM **)0);
  89 }
  90
  91 /*---------------------------------------------------------------------------
  92 |   Facility      :  libnmenu
  93 |   Function      :  int item_count(const MENU *menu)
  94 |
  95 |   Description   :  Get the number of items connected to the menu. If the
  96 |                    menu pointer is NULL we return -1.
  97 |
  98 |   Return Values :  Number of items or -1 to indicate error.
  99 +--------------------------------------------------------------------------*/
 100 NCURSES_EXPORT(int)
 101 item_count (const MENU *menu)
 102 {
 103   return(menu ? menu->nitems : -1);
 104 }
 105
 106 /* m_items.c ends here */