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/* test-xinerama.c --- playing with the Xinerama extension.
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* xscreensaver, Copyright (c) 2003 Jamie Zawinski <jwz@jwz.org>
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation. No representations are made about the suitability of this
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* software for any purpose. It is provided "as is" without express or
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#include <X11/Xatom.h>
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#include <X11/Intrinsic.h>
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#include <X11/Xproto.h>
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#include <X11/extensions/Xinerama.h>
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char *progclass = "XScreenSaver";
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time_t now = time ((time_t *) 0);
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char *ct = (char *) ctime (&now);
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int n = strlen(progname);
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strncpy(buf, progname, n);
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strncpy(buf+n, ct+11, 8);
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strcpy(buf+n+9, ": ");
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main (int argc, char **argv)
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int event_number, error_number;
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XineramaScreenInfo *xsi;
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Widget toplevel_shell = XtAppInitialize (&app, progclass, 0, 0,
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&argc, argv, 0, 0, 0);
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Display *dpy = XtDisplay (toplevel_shell);
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XtGetApplicationNameAndClass (dpy, &progname, &progclass);
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if (!XineramaQueryExtension(dpy, &event_number, &error_number))
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fprintf(stderr, "%s: XineramaQueryExtension(dpy, ...) ==> False\n",
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fprintf(stderr, "%s: server does not support the Xinerama extension.\n",
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fprintf(stderr, "%s: XineramaQueryExtension(dpy, ...) ==> %d, %d\n",
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blurb(), event_number, error_number);
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if (!XineramaIsActive(dpy))
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fprintf(stderr, "%s: XineramaIsActive(dpy) ==> False\n", blurb());
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fprintf(stderr, "%s: server says Xinerama is turned off.\n", blurb());
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fprintf(stderr, "%s: XineramaIsActive(dpy) ==> True\n", blurb());
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if (!XineramaQueryVersion(dpy, &major, &minor))
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fprintf(stderr, "%s: XineramaQueryVersion(dpy, ...) ==> False\n",
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fprintf(stderr, "%s: server didn't report Xinerama version numbers?\n",
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fprintf(stderr, "%s: XineramaQueryVersion(dpy, ...) ==> %d, %d\n", blurb(),
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xsi = XineramaQueryScreens (dpy, &nscreens);
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fprintf(stderr, "%s: %d Xinerama screens\n", blurb(), nscreens);
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for (i = 0; i < nscreens; i++)
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fprintf (stderr, "%s: screen %d: %dx%d+%d+%d\n",
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xsi[i].screen_number,
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xsi[i].width, xsi[i].height,
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xsi[i].x_org, xsi[i].y_org);