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diff --git a/include/VBox/xrandr.h b/include/VBox/xrandr.h
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+/** @file
+ * Module to dynamically load libXrandr and load all symbols which are needed by
+ * VirtualBox.
+ */
+
+/*
+ * Copyright (C) 2008-2023 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * 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, in version 3 of the
+ * License.
+ *
+ * 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, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+#ifndef VBOX_INCLUDED_xrandr_h
+#define VBOX_INCLUDED_xrandr_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+#include <iprt/types.h>
+#include <iprt/stdarg.h>
+
+#ifndef __cplusplus
+# error "This header requires C++ to avoid name clashes."
+#endif
+
+/* Define missing X11/XRandr structures, types and macros. */
+
+#define Bool int
+#define RRScreenChangeNotifyMask (1L << 0)
+#define RRScreenChangeNotify 0
+
+struct _XDisplay;
+typedef struct _XDisplay Display;
+
+typedef unsigned long Atom;
+typedef unsigned long XID;
+typedef XID RROutput;
+typedef XID Window;
+typedef XID RROutput;
+typedef XID RRCrtc;
+typedef XID RRMode;
+typedef unsigned long XRRModeFlags;
+typedef unsigned long int Time;
+
+struct XRRMonitorInfo
+{
+ Atom name;
+ Bool primary;
+ Bool automatic;
+ int noutput;
+ int x;
+ int y;
+ int width;
+ int height;
+ int mwidth;
+ int mheight;
+ RROutput *outputs;
+};
+typedef struct XRRMonitorInfo XRRMonitorInfo;
+
+struct XRRModeInfo
+{
+ RRMode id;
+ unsigned int width;
+ unsigned int height;
+ unsigned long dotClock;
+ unsigned int hSyncStart;
+ unsigned int hSyncEnd;
+ unsigned int hTotal;
+ unsigned int hSkew;
+ unsigned int vSyncStart;
+ unsigned int vSyncEnd;
+ unsigned int vTotal;
+ char *name;
+ unsigned int nameLength;
+ XRRModeFlags modeFlags;
+};
+typedef struct XRRModeInfo XRRModeInfo;
+
+struct XRRScreenResources
+{
+ Time timestamp;
+ Time configTimestamp;
+ int ncrtc;
+ RRCrtc *crtcs;
+ int noutput;
+ RROutput *outputs;
+ int nmode;
+ XRRModeInfo *modes;
+};
+typedef struct XRRScreenResources XRRScreenResources;
+
+/* Declarations of the functions that we need from libXrandr. */
+#define VBOX_XRANDR_GENERATE_HEADER
+
+#include <VBox/xrandr-calls.h>
+
+#undef VBOX_XRANDR_GENERATE_HEADER
+
+#endif /* !VBOX_INCLUDED_xrandr_h */
+