payloads/libpayload/curses/menu/m_sub.c

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  28
  29 /****************************************************************************
  30  *   Author:  Juergen Pfeifer, 1995,1997                                    *
  31  ****************************************************************************/
  32
  33 /***************************************************************************
  34 * Module m_sub                                                             *
  35 * Menus subwindow association routines                                     *
  36 ***************************************************************************/
  37
  38 #include "menu.priv.h"
  39
  40 MODULE_ID("$Id: m_sub.c,v 1.12 2010/01/23 21:20:11 tom Exp $")
  41
  42 /*---------------------------------------------------------------------------
  43 |   Facility      :  libnmenu
  44 |   Function      :  int set_menu_sub(MENU *menu, WINDOW *win)
  45 |
  46 |   Description   :  Sets the subwindow of the menu.
  47 |
  48 |   Return Values :  E_OK           - success
  49 |                    E_POSTED       - menu is already posted
  50 +--------------------------------------------------------------------------*/
  51 NCURSES_EXPORT(int)
  52 set_menu_sub(MENU * menu, WINDOW *win)
  53 {
  54   T((T_CALLED("set_menu_sub(%p,%p)"), (void *)menu, (void *)win));
  55
  56   if (menu)
  57     {
  58       if (menu->status & _POSTED)
  59         RETURN(E_POSTED);
  60       else
  61 #if NCURSES_SP_FUNCS
  62         {
  63           /* We ensure that usersub is never null. So even if a null
  64              WINDOW parameter is passed, we store the SCREENS stdscr.
  65              The only MENU that can have a null usersub is the static
  66              _nc_default_Menu.
  67            */
  68           SCREEN *sp = _nc_screen_of(menu->usersub);
  69
  70           menu->usersub = win ? win : stdscr;
  71           _nc_Calculate_Item_Length_and_Width(menu);
  72         }
  73 #else
  74         menu->usersub = win;
  75 #endif
  76     }
  77   else
  78     _nc_Default_Menu.usersub = win;
  79
  80   RETURN(E_OK);
  81 }
  82
  83 /*---------------------------------------------------------------------------
  84 |   Facility      :  libnmenu
  85 |   Function      :  WINDOW* menu_sub(const MENU *menu)
  86 |
  87 |   Description   :  Returns a pointer to the subwindow of the menu
  88 |
  89 |   Return Values :  NULL on error, otherwise a pointer to the window
  90 +--------------------------------------------------------------------------*/
  91 NCURSES_EXPORT(WINDOW *)
  92 menu_sub(const MENU * menu)
  93 {
  94   const MENU *m = Normalize_Menu(menu);
  95
  96   T((T_CALLED("menu_sub(%p)"), (const void *)menu));
  97   returnWin(Get_Menu_Window(m));
  98 }
  99
 100 /* m_sub.c ends here */