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diff --git a/nx-X11/programs/Xserver/hw/nxagent/Rootless.h b/nx-X11/programs/Xserver/hw/nxagent/Rootless.h
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+++ b/nx-X11/programs/Xserver/hw/nxagent/Rootless.h
@@ -0,0 +1,93 @@
+/**************************************************************************/
+/*                                                                        */
+/* Copyright (c) 2001, 2007 NoMachine, http://www.nomachine.com/.         */
+/*                                                                        */
+/* NXAGENT, NX protocol compression and NX extensions to this software    */
+/* are copyright of NoMachine. Redistribution and use of the present      */
+/* software is allowed according to terms specified in the file LICENSE   */
+/* which comes in the source distribution.                                */
+/*                                                                        */
+/* Check http://www.nomachine.com/licensing.html for applicability.       */
+/*                                                                        */
+/* NX and NoMachine are trademarks of NoMachine S.r.l.                    */
+/*                                                                        */
+/* All rights reserved.                                                   */
+/*                                                                        */
+/**************************************************************************/
+
+#ifndef __Rootless_H__
+#define __Rootless_H__
+
+#include "window.h"
+
+/*
+ * The real X server's root window if we
+ * are in rootless mode.
+ */
+
+extern WindowPtr nxagentRootlessWindow;
+
+/*
+ * We want to import all properties changed by external clients to
+ * reflect properties of our internal windows but we must ignore
+ * all the property notify events generated by our own requests.
+ * For this purpose we implement a FIFO to record every change pro-
+ * perty request that we dispatch. In this way, when processing a
+ * property notify, we can distinguish between the notifications
+ * generated by our requests from those generated by other clients
+ * connected to the real X server.
+ */
+
+typedef struct
+{
+  Window window;
+  Atom property;
+} PropertyRequestRec;
+
+extern PropertyRequestRec nxagentPropertyRequests[256];
+
+Window nxagentRootlessWindowParent(WindowPtr pWin);
+
+void nxagentRootlessAddTopLevelWindow(WindowPtr pWin, Window w);
+void nxagentRootlessDelTopLevelWindow(WindowPtr pWin);
+
+WindowPtr nxagentRootlessTopLevelWindow(Window w);
+
+#ifndef _XSERVER64
+void nxagentRootlessRestack(Window *toplevel, unsigned int ntoplevel);
+#else
+void nxagentRootlessRestack(unsigned long *toplevel, unsigned int ntoplevel);
+#endif
+
+
+int nxagentExportAllProperty(WindowPtr pWin);
+
+int nxagentExportProperty(WindowPtr pWin, Atom property, Atom type, int format,
+                              int mode, unsigned long nUnits, pointer value);
+
+#define MAX_RETRIEVED_PROPERTY_SIZE 256 * 1024
+
+void nxagentImportProperty(Window window, Atom property, Atom type, int format,
+                               unsigned long nitems, unsigned long bytes_after, unsigned char *buffer);
+
+/*
+ * Push last ChangeProperty to the list.
+ */
+
+void nxagentAddPropertyToList(Atom property, WindowPtr pWin);
+
+/*
+ * Check if a PropertyNotify match the top
+ * of the list.
+ */
+
+Bool nxagentNotifyMatchChangeProperty(void *X);
+
+void nxagentConfigureRootlessWindow(WindowPtr pWin, int x, int y, int w, int h, int bw,
+                                        WindowPtr pSib, int stack_mode, Mask mask);
+
+void nxagentCirculateRootlessWindows(int direction);
+
+void nxagentFreePropertyList(void);
+
+#endif /* __Rootless_H__ */