// Use this for initialization
 void Start()
 {
     descriptionLabel = "Last g-key event : ";
     lastKeyPress     = "No g-key event";
     //Value used to show the two different ways to implement g-keys support in your game
     //change it to false to try the non-callback version
     if (usingCallback)
     {
         LogitechGSDK.logiGKeyCbContext cbContext;
         LogitechGSDK.logiGkeyCB        cbInstance = new LogitechGSDK.logiGkeyCB(this.GkeySDKCallback);
         cbContext.gkeyCallBack = cbInstance;
         cbContext.gkeyContext  = IntPtr.Zero;
         LogitechGSDK.LogiGkeyInit(ref cbContext);
     }
     else
     {
         LogitechGSDK.LogiGkeyInitWithoutCallback();
     }
 }