ncurses 6.3 - patch 20211106
[ncurses.git] / ncurses / base / lib_delwin.c
index 2f0621cf856c94673636cfc7c6a306ad827c9e84..efaf4ee112fe437347063c29b602d61c824c323b 100644 (file)
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright 2020 Thomas E. Dickey                                          *
+ * Copyright 2020,2021 Thomas E. Dickey                                     *
  * Copyright 1998-2008,2009 Free Software Foundation, Inc.                  *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
 
 #include <curses.priv.h>
 
-MODULE_ID("$Id: lib_delwin.c,v 1.21 2020/02/02 23:34:34 tom Exp $")
+MODULE_ID("$Id: lib_delwin.c,v 1.22 2021/11/06 21:54:14 tom Exp $")
 
 static bool
 cannot_delete(WINDOW *win)
 {
     WINDOWLIST *p;
     bool result = TRUE;
+    if (IS_PAD(win)) {
+       result = FALSE;
+    } else {
 #ifdef USE_SP_WINDOWLIST
-    SCREEN *sp = _nc_screen_of(win);
+       SCREEN *sp = _nc_screen_of(win);
 #endif
 
-    for (each_window(SP_PARM, p)) {
-       if (&(p->win) == win) {
-           result = FALSE;
-       } else if ((p->win._flags & _SUBWIN) != 0
-                  && p->win._parent == win) {
-           result = TRUE;
-           break;
+       for (each_window(SP_PARM, p)) {
+           if (&(p->win) == win) {
+               result = FALSE;
+           } else if (IS_SUBWIN(&(p->win))
+                      && p->win._parent == win) {
+               result = TRUE;
+               break;
+           }
        }
     }
     return result;
@@ -77,15 +81,18 @@ delwin(WINDOW *win)
        if (win == 0
            || cannot_delete(win)) {
            result = ERR;
+       } else if (IS_PAD(win)) {
+           win->_parent = NULL;
+           result = OK;
        } else {
 #if NCURSES_SP_FUNCS
            SCREEN *sp = _nc_screen_of(win);
 #endif
-           if (win->_flags & _SUBWIN)
+           if (IS_SUBWIN(win)) {
                touchwin(win->_parent);
-           else if (CurScreen(SP_PARM) != 0)
+           } else if (CurScreen(SP_PARM) != 0) {
                touchwin(CurScreen(SP_PARM));
-
+           }
            result = _nc_freewin(win);
        }
        _nc_unlock_global(curses);