X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=menu%2Fm_sub.c;h=4658e90e5a0743b23fb488fd7bbcf5ce25cf83ad;hp=76cb0021f51dc0ced9e186eb62ee136ba8d9abb6;hb=f3ec084eb66ba14feb6357b674fb85dd474933d8;hpb=46722468f47c2b77b3987729b4bcf2321cccfd01

diff --git a/menu/m_sub.c b/menu/m_sub.c
index 76cb0021..4658e90e 100644
--- a/menu/m_sub.c
+++ b/menu/m_sub.c
@@ -1,5 +1,6 @@
 /****************************************************************************
- * Copyright (c) 1998,2000 Free Software Foundation, Inc.                   *
+ * Copyright 2020 Thomas E. Dickey                                          *
+ * Copyright 1998-2009,2010 Free Software Foundation, Inc.                  *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -28,7 +29,6 @@
 
 /****************************************************************************
  *   Author:  Juergen Pfeifer, 1995,1997                                    *
- *   Contact: http://www.familiepfeifer.de/Contact.aspx?Lang=en             *
  ****************************************************************************/
 
 /***************************************************************************
@@ -38,7 +38,7 @@
 
 #include "menu.priv.h"
 
-MODULE_ID("$Id: m_sub.c,v 1.6 2002/07/06 15:22:16 juergen Exp $")
+MODULE_ID("$Id: m_sub.c,v 1.13 2020/02/02 23:34:34 tom Exp $")
 
 /*---------------------------------------------------------------------------
 |   Facility      :  libnmenu  
@@ -50,34 +50,52 @@ MODULE_ID("$Id: m_sub.c,v 1.6 2002/07/06 15:22:16 juergen Exp $")
 |                    E_POSTED       - menu is already posted
 +--------------------------------------------------------------------------*/
 NCURSES_EXPORT(int)
-set_menu_sub (MENU *menu, WINDOW *win)
+set_menu_sub(MENU * menu, WINDOW *win)
 {
+  T((T_CALLED("set_menu_sub(%p,%p)"), (void *)menu, (void *)win));
+
   if (menu)
     {
-      if ( menu->status & _POSTED )
+      if (menu->status & _POSTED)
 	RETURN(E_POSTED);
-      menu->usersub = win;
-      _nc_Calculate_Item_Length_and_Width(menu);
+      else
+#if NCURSES_SP_FUNCS
+	{
+	  /* We ensure that usersub is never null. So even if a null
+	     WINDOW parameter is passed, we store the SCREENS stdscr.
+	     The only MENU that can have a null usersub is the static
+	     _nc_default_Menu.
+	   */
+	  SCREEN *sp = _nc_screen_of(menu->usersub);
+
+	  menu->usersub = win ? win : sp->_stdscr;
+	  _nc_Calculate_Item_Length_and_Width(menu);
+	}
+#else
+	menu->usersub = win;
+#endif
     }
   else
     _nc_Default_Menu.usersub = win;
-  
+
   RETURN(E_OK);
 }
 
 /*---------------------------------------------------------------------------
 |   Facility      :  libnmenu  
-|   Function      :  WINDOW *menu_sub(const MENU *menu)
+|   Function      :  WINDOW* menu_sub(const MENU *menu)
 |   
 |   Description   :  Returns a pointer to the subwindow of the menu
 |
 |   Return Values :  NULL on error, otherwise a pointer to the window
 +--------------------------------------------------------------------------*/
 NCURSES_EXPORT(WINDOW *)
-menu_sub (const MENU * menu)
+menu_sub(const MENU * menu)
 {
-  const MENU* m = Normalize_Menu(menu);
-  return Get_Menu_Window(m);
+  const MENU *m = Normalize_Menu(menu);
+
+  T((T_CALLED("menu_sub(%p)"), (const void *)menu));
+  returnWin(Get_Menu_Window(m));
 }
 
 /* m_sub.c ends here */