rom/intuition/onmenu.c

   1 /*
   2     Copyright © 1995-2007, The AROS Development Team. All rights reserved.
   3     Copyright © 2001-2003, The MorphOS Development Team. All Rights Reserved.
   4     $Id$
   5 */
   6
   7 #include "intuition_intern.h"
   8
   9 /*****************************************************************************
  10
  11     NAME */
  12 #include <intuition/intuition.h>
  13
  14     AROS_LH2(void, OnMenu,
  15
  16 /*  SYNOPSIS */
  17          AROS_LHA(struct Window    *, window, A0),
  18          AROS_LHA(UWORD             , menunumber, D0),
  19
  20 /*  LOCATION */
  21          struct IntuitionBase *, IntuitionBase, 32, Intuition)
  22
  23 /*  FUNCTION
  24     Enable a whole menu, an item or a sub-item depending on
  25     the menunumber.
  26
  27     INPUTS
  28     window - The window, the menu belongs to
  29     menunumber - The packed information on what piece of menu to enable
  30
  31     RESULT
  32     None.
  33
  34     NOTES
  35
  36     EXAMPLE
  37
  38     BUGS
  39
  40     SEE ALSO
  41     OffMenu(), ResetMenuStrip()
  42
  43     INTERNALS
  44
  45     HISTORY
  46
  47 *****************************************************************************/
  48 {
  49     AROS_LIBFUNC_INIT
  50
  51     int i;
  52     struct Menu * thismenu;
  53     struct MenuItem * thisitem;
  54
  55     DEBUG_ONMENU(dprintf("OnMenu: Window 0x%lx MenuNumber 0x%lx\n", window, menunumber));
  56
  57     SANITY_CHECK(window)
  58
  59     IntuitionBase = IntuitionBase;  /* shut up the compiler */
  60
  61     thismenu = window->MenuStrip;
  62
  63     if (MENUNUM(menunumber) != NOMENU)
  64     {
  65         for (i = 0; i < MENUNUM(menunumber) && thismenu; i++)
  66         {
  67             thismenu = thismenu->NextMenu;
  68         }
  69
  70         if (thismenu)
  71         {
  72             if (ITEMNUM(menunumber) == NOITEM)
  73             {
  74                 thismenu->Flags |= MENUENABLED;
  75             }
  76             else
  77             {
  78                 thisitem = thismenu->FirstItem;
  79
  80                 for (i = 0; i < ITEMNUM(menunumber) && thisitem; i++)
  81                 {
  82                     thisitem = thisitem->NextItem;
  83                 }
  84
  85                 if (thisitem)
  86                 {
  87                     if (SUBNUM(menunumber) != NOSUB && thisitem->SubItem)
  88                     {
  89                         thisitem = thisitem->SubItem;
  90
  91                         for (i = 0; i < SUBNUM(menunumber) && thisitem; i++)
  92                         {
  93                             thisitem = thisitem->NextItem;
  94                         }
  95                     }
  96                 }
  97
  98                 if (thisitem)
  99                 {
 100                     thisitem->Flags |= ITEMENABLED;
 101                 }
 102             }
 103
 104         } /* if (thismenu) */
 105
 106     } /* if (MENUNUM(menunumber) != NOMENU) */
 107
 108     AROS_LIBFUNC_EXIT
 109 } /* OnMenu */