/*
* Motif
*
* Copyright (c) 1987-2012, The Open Group. All rights reserved.
*
* These libraries and programs are free software; you can
* redistribute them and/or modify them under the terms of the GNU
* Lesser General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* These libraries and programs are distributed in the hope that
* they will be useful, but WITHOUT ANY WARRANTY; without even the
* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with these librararies and programs; if not, write
* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
* Floor, Boston, MA 02110-1301 USA
*/
/*
* HISTORY
*/
#ifdef REV_INFO
#ifndef lint
static char rcsid[] = "$XConsortium: IsAncesWin.c /main/7 1995/07/14 11:36:06 drk $"
#endif
#endif
/***********************************************************************
@(#)IsAncesWin.c 1.5.1.1 Date:1/22/91
Author: TAT
History:
05/24/90 SJS add to sccs
Calls:
Summary:
Determines if the first specified window is an ancestor of the 2nd
but not the root. It returns true if this is in fact a true statement.
INPUTS:
window1 - window which may be ancestor of window2
window2 - any window
OUTPUTS:
none
RETURNS:
True if window1 is not the root but is an ancestor of window2
False otherwise
************************************************************************/
#include "xislib.h"
int xisIsAncestorWindow(window1,window2)
Window window1,window2;
{
static char routine_name[] = "xisIsAncestorWindow():";
Window tmp_window;
Window root_return, parent_return;
Window *children_return;
unsigned int n_children;
xisUseSessionInfo(routine_name);
if (window1 == xisRootWindow)
return(False);
if((!window1) || (!window2))
return(False);
if((!xisWindowExists(window1)) || (!xisWindowExists(window2)))
return(False);
tmp_window = window2;
while (tmp_window != xisRootWindow && tmp_window != window1) {
if (!XQueryTree(xisDisplay,tmp_window,&root_return,&parent_return,
&children_return,&n_children)) {
(*xisErrorMsg)("%s XQueryTree() failure\n", routine_name);
exit(-1);
}
if (children_return != NULL)
XFree( (caddr_t)children_return);
tmp_window = parent_return;
}
if (tmp_window == window1)
return(True);
else
return(False);
} /* End xisIsAncestorWindow() */