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diff --git a/nx-X11/programs/Xserver/hw/nxagent/Display.h b/nx-X11/programs/Xserver/hw/nxagent/Display.h
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@@ -0,0 +1,179 @@
+/**************************************************************************/
+/*                                                                        */
+/* 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.                                                   */
+/*                                                                        */
+/**************************************************************************/
+
+/*
+
+Copyright 1993 by Davor Matic
+
+Permission to use, copy, modify, distribute, and sell this software
+and its documentation for any purpose is hereby granted without fee,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation.  Davor Matic makes no representations about
+the suitability of this software for any purpose.  It is provided "as
+is" without express or implied warranty.
+
+*/
+
+#ifndef __Display_H__
+#define __Display_H__
+
+#define MAXDEPTH 32
+#define MAXVISUALSPERDEPTH 256
+
+extern Display *nxagentDisplay;
+extern Display *nxagentShadowDisplay;
+extern XVisualInfo *nxagentVisuals;
+extern int nxagentNumVisuals;
+extern int nxagentDefaultVisualIndex;
+extern Colormap *nxagentDefaultColormaps;
+extern int nxagentNumDefaultColormaps;
+extern int *nxagentDepths;
+extern int nxagentNumDepths;
+extern XPixmapFormatValues *nxagentPixmapFormats;
+extern int nxagentNumPixmapFormats;
+extern Pixel nxagentBlackPixel;
+extern Pixel nxagentWhitePixel;
+extern Drawable nxagentDefaultDrawables[MAXDEPTH + 1];
+extern Pixmap nxagentScreenSaverPixmap;
+
+/*
+ * The "confine" window is used in nxagentConstrainCursor().
+ * We are currently overriding the original Xnest behaviour
+ * and just skip the "constrain" stuff.
+ */
+
+extern Window nxagentConfineWindow;
+
+/*
+ * Keyboard and pointer are handled as they were hardware
+ * devices, that is we translate the key codes according to
+ * our own transcripts. We inherit this behaviour from Xnest.
+ * The following mask will contain the event mask selected
+ * for the root window. All the keyboard and pointer events
+ * are enqueued to the mi that translates and posts them to
+ * managed clients.
+ */
+
+extern unsigned long nxagentEventMask;
+
+void nxagentOpenDisplay(int argc, char *argv[]);
+void nxagentWaitDisplay(void);
+void nxagentCloseDisplay(void);
+void nxagentAbortDisplay(void);
+
+void nxagentAddXConnection(void);
+void nxagentRemoveXConnection(void);
+
+Bool nxagentXServerGeometryChanged(void);
+
+/*
+ * Create the default drawables.
+ */
+
+void nxagentGetDepthsAndPixmapFormats(void);
+void nxagentSetDefaultDrawables(void);
+
+extern Bool nxagentTrue24;
+
+void nxagentBackupDisplayInfo(void);
+void nxagentCleanupBackupDisplayInfo(void);
+
+void nxagentInstallDisplayHandlers(void);
+void nxagentPostInstallDisplayHandlers(void);
+void nxagentResetDisplayHandlers(void);
+
+void nxagentInstallSignalHandlers(void);
+void nxagentPostInstallSignalHandlers(void);
+void nxagentResetSignalHandlers(void);
+
+void nxagentDisconnectDisplay(void);
+Bool nxagentReconnectDisplay(void *p0);
+
+/*
+ * Deal with the smart scheduler.
+ */
+
+#ifdef SMART_SCHEDULE
+
+#define nxagentInitTimer() \
+\
+    SmartScheduleInit();
+
+#define nxagentStopTimer() \
+\
+    if (SmartScheduleTimerStopped == 0) \
+    { \
+      SmartScheduleStopTimer(); \
+    } \
+\
+    SmartScheduleIdle = 1;
+
+#define nxagentStartTimer() \
+\
+    if (SmartScheduleTimerStopped == 1) \
+    { \
+      SmartScheduleStartTimer(); \
+    } \
+\
+      SmartScheduleIdle = 0;
+
+#define nxagentDisableTimer() \
+\
+    if (SmartScheduleTimerStopped == 0) \
+    { \
+      SmartScheduleStopTimer(); \
+    } \
+\
+    SmartScheduleDisable = 1;
+
+#endif /* #ifdef SMART_SCHEDULE */
+
+/*
+ * File descriptor currently used by
+ * Xlib for the agent display.
+ */
+
+extern int nxagentXConnectionNumber;
+
+/*
+ * File descriptor currently used by
+ * Xlib for the agent shadow display.
+ */
+
+extern int nxagentShadowXConnectionNumber;
+
+int nxagentServerOrder(void);
+
+#define nxagentClientOrder(client) \
+    ((client)->swapped ? !nxagentServerOrder() : nxagentServerOrder())
+
+/*
+ * Terminate the agent after the next
+ * dispatch loop.
+ */
+
+#define nxagentTerminateSession() \
+    do \
+    { \
+      dispatchException |= DE_TERMINATE; \
+    \
+      isItTimeToYield = TRUE; \
+    } \
+    while (0)
+
+#endif /* __Display_H__ */