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/******************************************************************************
*                            recordMyDesktop                                  *
*******************************************************************************
*                                                                             *
*            Copyright (C) 2006,2007,2008 John Varouhakis                     *
*                                                                             *
*                                                                             *
*   This program is free software; you can redistribute it and/or modify      *
*   it under the terms of the GNU General Public License as published by      *
*   the Free Software Foundation; either version 2 of the License, or         *
*   (at your option) any later version.                                       *
*                                                                             *
*   This program is distributed in the hope that it will be useful,           *
*   but WITHOUT ANY WARRANTY; without even the implied warranty of            *
*   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             *
*   GNU General Public License for more details.                              *
*                                                                             *
*   You should have received a copy of the GNU General Public License         *
*   along with this program; if not, write to the Free Software               *
*   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA  *
*                                                                             *
*                                                                             *
*                                                                             *
*   For further information contact me at johnvarouhakis@gmail.com            *
******************************************************************************/

#include "config.h"
#include "rmd_wm_check.h"

#include "rmd_types.h"

#include <X11/Xatom.h>


char *rmdWMCheck(Display *dpy,Window root) {
	Window  	*wm_child=NULL;
	Atom		nwm_atom,
			utf8_string,
			wm_name_atom,
			rt;
	unsigned long	nbytes, nitems;

	char		*wm_name_str=NULL;
	int		fmt;

	utf8_string = XInternAtom(dpy, "UTF8_STRING", False);

	nwm_atom =XInternAtom(dpy,"_NET_SUPPORTING_WM_CHECK",True);
	wm_name_atom =XInternAtom(dpy,"_NET_WM_NAME",True);

	if (nwm_atom!=None && wm_name_atom!=None) {

		if (XGetWindowProperty(  dpy,root,nwm_atom,0,100,
								False,XA_WINDOW,
								&rt,&fmt,&nitems, &nbytes,
								(unsigned char **)((void*)&wm_child))
							!= Success ) {
			fprintf(stderr,"Error while trying to get a"
						   " window to identify the window manager.\n");
		}

		if ((wm_child == NULL)||
		   (XGetWindowProperty(dpy,*wm_child,wm_name_atom,0,100,
							   False,utf8_string,&rt,
							   &fmt,&nitems, &nbytes,
							   (unsigned char **)((void*)&wm_name_str))
			!=Success)) {
			fprintf(stderr,"Warning!!!\nYour window manager appears"
						   " to be non-compliant!\n");
		}
	}
	fprintf(stderr,	"Your window manager appears to be %s\n\n",
			((wm_name_str!=NULL)?wm_name_str:"Unknown"));

	return wm_name_str;
}
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