Index: /trunk/src/VBox/Additions/WINNT/VBoxTray/VBoxMMR.cpp
===================================================================
--- /trunk/src/VBox/Additions/WINNT/VBoxTray/VBoxMMR.cpp	(revision 42295)
+++ /trunk/src/VBox/Additions/WINNT/VBoxTray/VBoxMMR.cpp	(revision 42295)
@@ -0,0 +1,96 @@
+/* $Id$ */
+/** @file
+ * VBoxMMR - Multimedia Redirection
+ */
+
+/*
+ * Copyright (C) 2012 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ */
+
+#include "VBoxTray.h"
+#include "VBoxMMR.h"
+
+struct VBOXMMRCONTEXT
+{
+    HINSTANCE hMod;
+    HHOOK     hHook;
+};
+
+static VBOXMMRCONTEXT gCtx = {0};
+
+static const char *g_pszMMRDLL  = "VBoxMMRHook";
+static const char *g_pszMMRPROC = "CBTProc";
+
+void VBoxMMRCleanup(VBOXMMRCONTEXT *pCtx)
+{
+    if (NULL != pCtx->hHook)
+    {
+        UnhookWindowsHookEx(pCtx->hHook);
+    }
+
+    if (pCtx->hMod)
+    {
+        FreeLibrary(pCtx->hMod);
+    }
+
+    return;
+}
+
+int VBoxMMRInit(
+    const VBOXSERVICEENV *pEnv,
+    void **ppInstance,
+    bool *pfStartThread)
+{
+    HOOKPROC pHook = NULL;
+
+    LogRel2(("VBoxMMR: Initializing\n"));
+
+    gCtx.hMod = LoadLibraryA(g_pszMMRDLL);
+    if (NULL == gCtx.hMod)
+    {
+        LogRel2(("VBoxMMR: Hooking library not found\n"));
+        VBoxMMRCleanup(&gCtx);
+        return VERR_NOT_FOUND;
+    }
+
+    pHook = (HOOKPROC) GetProcAddress(gCtx.hMod, g_pszMMRPROC);
+    if (NULL == pHook)
+    {
+        LogRel2(("VBoxMMR: Hooking proc not found\n"));
+        VBoxMMRCleanup(&gCtx);
+        return VERR_NOT_FOUND;
+    }
+
+    gCtx.hHook = SetWindowsHookEx(WH_CBT, pHook, gCtx.hMod, 0);
+    if (NULL == gCtx.hHook)
+    {
+        int rc = RTErrConvertFromWin32(GetLastError());
+        LogRel2(("VBoxMMR: Error installing hooking proc: %d\n", rc));
+        VBoxMMRCleanup(&gCtx);
+        return rc;
+    }
+
+    *ppInstance = &gCtx;
+
+    return VINF_SUCCESS;
+}
+
+void VBoxMMRDestroy(const VBOXSERVICEENV *pEnv, void *pInstance)
+{
+    VBOXMMRCONTEXT *pCtx = (VBOXMMRCONTEXT *) pInstance;
+
+    VBoxMMRCleanup(pCtx);
+}
+
+unsigned __stdcall VBoxMMRThread(void *pInstance)
+{
+    return 0;
+}
Index: /trunk/src/VBox/Additions/WINNT/VBoxTray/VBoxMMR.h
===================================================================
--- /trunk/src/VBox/Additions/WINNT/VBoxTray/VBoxMMR.h	(revision 42295)
+++ /trunk/src/VBox/Additions/WINNT/VBoxTray/VBoxMMR.h	(revision 42295)
@@ -0,0 +1,33 @@
+/* $Id$ */
+/** @file
+ * VBoxMMR - Multimedia Redirection
+ */
+
+/*
+ * Copyright (C) 2012 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ */
+
+#ifndef __VBOXSERVICEMMR__H
+#define __VBOXSERVICEMMR__H
+
+int VBoxMMRInit(
+    const VBOXSERVICEENV *pEnv,
+    void **ppInstance,
+    bool *pfStartThread);
+
+unsigned __stdcall VBoxMMRThread(
+    void *pInstance);
+
+void VBoxMMRDestroy(
+    const VBOXSERVICEENV *pEnv,
+    void *pInstance);
+
+#endif /* __VBOXSERVICEMMR__H */