diff -r a2fdc35b8f46 -r 4e5b531d23cb voicerecorder/UtilsInc/VRUSBStateHanlder.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/voicerecorder/UtilsInc/VRUSBStateHanlder.h	Tue May 11 16:15:58 2010 +0300
@@ -0,0 +1,73 @@
+/*
+ ============================================================================
+ Name		: VRUSBStateHanlder.h
+ Author	  : Junhua Xu
+ Version	 : 1.0
+ Copyright   : Your copyright notice
+ Description : CVRUSBStateHanlder declaration
+ ============================================================================
+ */
+
+#ifndef VRUSBSTATEHANLDER_H
+#define VRUSBSTATEHANLDER_H
+
+#include <e32base.h>	// For CActive, link against: euser.lib
+#include <e32std.h>		// For RTimer, link against: euser.lib
+#include <e32property.h> 
+
+//#include "DummyUSBState.h" // for dummy testing
+
+class MVRUSBStateObserver
+    {
+public:
+    // Constructors and destructor
+
+    virtual TInt HandleUsbPlugInL() = 0;
+    virtual TInt HandleUsbPlugOutL() = 0;
+
+    };
+
+class CVRUSBStateHanlder : public CActive
+    {
+public:
+    // Cancel and destroy
+    ~CVRUSBStateHanlder();
+
+    IMPORT_C static CVRUSBStateHanlder* NewL(MVRUSBStateObserver* aObserver);
+
+public:
+
+    IMPORT_C static TBool IsUsbActive();
+
+private:
+    // C++ constructor
+    CVRUSBStateHanlder(MVRUSBStateObserver* aObserver);
+
+    // Second-phase constructor
+    void ConstructL();
+
+private:
+    // From CActive
+    // Handle completion
+    void RunL();
+
+    // How to cancel me
+    void DoCancel();
+
+    // Override to handle leaves from RunL(). Default implementation causes
+    // the active scheduler to panic.
+    TInt RunError(TInt aError);
+
+    void StartL();
+
+private:
+#ifdef DUMMY_USB_TESTING
+    RTimer iTimer; // Provides async timing service, for dummy testing
+    TInt isUSBActive;
+#else
+    RProperty iProperty;
+#endif
+    MVRUSBStateObserver* iObserver;    
+    };
+
+#endif // VRUSBSTATEHANLDER_H