diff --git a/vncconfig_unix/vncExt.h b/vncconfig_unix/vncExt.h
new file mode 100644
index 0000000..de69f4e
--- /dev/null
+++ b/vncconfig_unix/vncExt.h
@@ -0,0 +1,279 @@
+/* Copyright (C) 2002-2003 RealVNC Ltd.  All Rights Reserved.
+ *    
+ * This 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 software 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 software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+#ifndef _VNCEXT_H_
+#define _VNCEXT_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define X_VncExtSetParam 0
+#define X_VncExtGetParam 1
+#define X_VncExtGetParamDesc 2
+#define X_VncExtListParams 3
+#define X_VncExtSetServerCutText 4
+#define X_VncExtGetClientCutText 5
+#define X_VncExtSelectInput 6
+#define X_VncExtConnect 7
+
+#define VncExtClientCutTextNotify 0
+#define VncExtSelectionChangeNotify 1
+#define VncExtClientCutTextMask (1 << VncExtClientCutTextNotify)
+#define VncExtSelectionChangeMask (1 << VncExtSelectionChangeNotify)
+
+#define VncExtNumberEvents 2
+#define VncExtNumberErrors 0
+
+#ifndef _VNCEXT_SERVER_
+
+Bool XVncExtQueryExtension(Display* dpy, int* event_basep, int* error_basep);
+Bool XVncExtSetParam(Display* dpy, const char* param);
+Bool XVncExtGetParam(Display* dpy, const char* param, char** value, int* len);
+char* XVncExtGetParamDesc(Display* dpy, const char* param);
+char** XVncExtListParams(Display* dpy, int* nParams);
+void XVncExtFreeParamList(char** list);
+Bool XVncExtSetServerCutText(Display* dpy, const char* str, int len);
+Bool XVncExtGetClientCutText(Display* dpy, char** str, int* len);
+Bool XVncExtSelectInput(Display* dpy, Window w, int mask);
+Bool XVncExtConnect(Display* dpy, char* hostAndPort);
+
+typedef struct {
+  int type;
+  unsigned long serial;
+  Bool send_event;
+  Display *display;
+  Window window;
+  Time time;
+} XVncExtClientCutTextEvent;
+
+typedef struct {
+  int type;
+  unsigned long serial;
+  Bool send_event;
+  Display *display;
+  Window window;
+  Atom selection;
+} XVncExtSelectionChangeEvent;
+
+#endif
+
+#ifdef _VNCEXT_PROTO_
+
+#define VNCEXTNAME "VNC-EXTENSION"
+
+typedef struct {
+  CARD8 reqType;       /* always VncExtReqCode */
+  CARD8 vncExtReqType; /* always VncExtSetParam */
+  CARD16 length B16;
+  CARD8 paramLen;
+  CARD8 pad0;
+  CARD16 pad1 B16;
+} xVncExtSetParamReq;
+#define sz_xVncExtSetParamReq 8
+
+typedef struct {
+ BYTE type; /* X_Reply */
+ BYTE success;
+ CARD16 sequenceNumber B16;
+ CARD32 length B32;
+ CARD32 pad0 B32;
+ CARD32 pad1 B32;
+ CARD32 pad2 B32;
+ CARD32 pad3 B32;
+ CARD32 pad4 B32;
+ CARD32 pad5 B32;
+} xVncExtSetParamReply;
+#define sz_xVncExtSetParamReply 32
+
+
+typedef struct {
+  CARD8 reqType;       /* always VncExtReqCode */
+  CARD8 vncExtReqType; /* always VncExtGetParam */
+  CARD16 length B16;
+  CARD8 paramLen;
+  CARD8 pad0;
+  CARD16 pad1 B16;
+} xVncExtGetParamReq;
+#define sz_xVncExtGetParamReq 8
+
+typedef struct {
+ BYTE type; /* X_Reply */
+ BYTE success;
+ CARD16 sequenceNumber B16;
+ CARD32 length B32;
+ CARD16 valueLen B16;
+ CARD16 pad0 B16;
+ CARD32 pad1 B32;
+ CARD32 pad2 B32;
+ CARD32 pad3 B32;
+ CARD32 pad4 B32;
+ CARD32 pad5 B32;
+} xVncExtGetParamReply;
+#define sz_xVncExtGetParamReply 32
+
+
+typedef struct {
+  CARD8 reqType;       /* always VncExtReqCode */
+  CARD8 vncExtReqType; /* always VncExtGetParamDesc */
+  CARD16 length B16;
+  CARD8 paramLen;
+  CARD8 pad0;
+  CARD16 pad1 B16;
+} xVncExtGetParamDescReq;
+#define sz_xVncExtGetParamDescReq 8
+
+typedef struct {
+ BYTE type; /* X_Reply */
+ BYTE success;
+ CARD16 sequenceNumber B16;
+ CARD32 length B32;
+ CARD16 descLen B16;
+ CARD16 pad0 B16;
+ CARD32 pad1 B32;
+ CARD32 pad2 B32;
+ CARD32 pad3 B32;
+ CARD32 pad4 B32;
+ CARD32 pad5 B32;
+} xVncExtGetParamDescReply;
+#define sz_xVncExtGetParamDescReply 32
+
+
+typedef struct {
+  CARD8 reqType;       /* always VncExtReqCode */
+  CARD8 vncExtReqType; /* always VncExtListParams */
+  CARD16 length B16;
+} xVncExtListParamsReq;
+#define sz_xVncExtListParamsReq 4
+
+typedef struct {
+ BYTE type; /* X_Reply */
+ BYTE pad0;
+ CARD16 sequenceNumber B16;
+ CARD32 length B32;
+ CARD16 nParams B16;
+ CARD16 pad1 B16;
+ CARD32 pad2 B32;
+ CARD32 pad3 B32;
+ CARD32 pad4 B32;
+ CARD32 pad5 B32;
+ CARD32 pad6 B32;
+} xVncExtListParamsReply;
+#define sz_xVncExtListParamsReply 32
+
+
+typedef struct {
+  CARD8 reqType;       /* always VncExtReqCode */
+  CARD8 vncExtReqType; /* always VncExtSetServerCutText */
+  CARD16 length B16;
+  CARD32 textLen B32;
+} xVncExtSetServerCutTextReq;
+#define sz_xVncExtSetServerCutTextReq 8
+
+
+typedef struct {
+  CARD8 reqType;       /* always VncExtReqCode */
+  CARD8 vncExtReqType; /* always VncExtGetClientCutText */
+  CARD16 length B16;
+} xVncExtGetClientCutTextReq;
+#define sz_xVncExtGetClientCutTextReq 4
+
+typedef struct {
+ BYTE type; /* X_Reply */
+ BYTE pad0;
+ CARD16 sequenceNumber B16;
+ CARD32 length B32;
+ CARD32 textLen B32;
+ CARD32 pad1 B32;
+ CARD32 pad2 B32;
+ CARD32 pad3 B32;
+ CARD32 pad4 B32;
+ CARD32 pad5 B32;
+} xVncExtGetClientCutTextReply;
+#define sz_xVncExtGetClientCutTextReply 32
+
+
+typedef struct {
+  CARD8 reqType;       /* always VncExtReqCode */
+  CARD8 vncExtReqType; /* always VncExtSelectInput */
+  CARD16 length B16;
+  CARD32 window B32;
+  CARD32 mask B32;
+} xVncExtSelectInputReq;
+#define sz_xVncExtSelectInputReq 12
+
+
+typedef struct {
+  CARD8 reqType;       /* always VncExtReqCode */
+  CARD8 vncExtReqType; /* always VncExtConnect */
+  CARD16 length B16;
+  CARD8 strLen;
+  CARD8 pad0;
+  CARD16 pad1 B16;
+} xVncExtConnectReq;
+#define sz_xVncExtConnectReq 8
+
+typedef struct {
+ BYTE type; /* X_Reply */
+ BYTE success;
+ CARD16 sequenceNumber B16;
+ CARD32 length B32;
+ CARD32 pad0 B32;
+ CARD32 pad1 B32;
+ CARD32 pad2 B32;
+ CARD32 pad3 B32;
+ CARD32 pad4 B32;
+ CARD32 pad5 B32;
+} xVncExtConnectReply;
+#define sz_xVncExtConnectReply 32
+
+
+typedef struct {
+  BYTE type;    /* always eventBase + VncExtClientCutTextNotify */
+  BYTE pad0;
+  CARD16 sequenceNumber B16;
+  CARD32 window B32;
+  CARD32 time B32;
+  CARD32 pad1 B32;
+  CARD32 pad2 B32;
+  CARD32 pad3 B32;
+  CARD32 pad4 B32;
+  CARD32 pad5 B32;
+} xVncExtClientCutTextNotifyEvent;
+#define sz_xVncExtClientCutTextNotifyEvent 32
+
+typedef struct {
+  BYTE type;    /* always eventBase + VncExtSelectionChangeNotify */
+  BYTE pad0;
+  CARD16 sequenceNumber B16;
+  CARD32 window B32;
+  CARD32 selection B32;
+  CARD32 pad1 B32;
+  CARD32 pad2 B32;
+  CARD32 pad3 B32;
+  CARD32 pad4 B32;
+  CARD32 pad5 B32;
+} xVncExtSelectionChangeNotifyEvent;
+#define sz_xVncExtSelectionChangeNotifyEvent 32
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif