delwin.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 1997 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1988 AT&T */
/* All Rights Reserved */
/*
* University Copyright- Copyright (c) 1982, 1986, 1988
* The Regents of the University of California
* All Rights Reserved
*
* University Acknowledgment- Portions of this document are derived from
* software developed by the University of California, Berkeley, and its
* contributors.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*LINTLIBRARY*/
#include <stdlib.h>
#include <sys/types.h>
#include "curses_inc.h"
/* This routine deletes a _window and releases it back to the system. */
int
delwin(WINDOW *win)
{
int i;
WINDOW *par;
/* If we have children don't delte the window. */
if (win->_ndescs > 0)
return (ERR);
/*
* If window is a pad, delete the padwin associated with it.
* NOTE: We shouldn't care that the recursive call will decrement
* ndescs for this window, since the window will be deleted anyhow.
*/
if (win->_padwin) {
win->_padwin->_maxy = win->_maxy;
(void) delwin(win->_padwin);
}
if (win->_parent == NULL) {
/* Delete all the memory associated with this window. */
for (i = win->_maxy; i-- > 0; ) {
free((char *)win->_y[i]);
#ifdef _VR3_COMPAT_CODE
if (_y16update)
free((char *)win->_y16[i]);
#endif /* _VR3_COMPAT_CODE */
}
} else {
/*
* We are a subwin and we don't want to delete the memory since
* it's shared by other windows. We do want to decrement the
* descendant count so that if there are no children left to a
* particular window winsdelln.c will run in fast mode (look there).
*/
for (par = win->_parent; par != NULL; par = par->_parent)
par->_ndescs--;
}
#ifdef _VR3_COMPAT_CODE
if (_y16update)
free((char *)win->_y16);
#endif /* _VR3_COMPAT_CODE */
free((char *)win->_y);
free((char *)win->_firstch);
free((char *)win);
return (OK);
}