private static void TwoFingerGesture_AddMethod(E_2FINGERSCOMMON type, GestureDelegate method)
    {
        if (GestureTwoFingersCommon._instance == null)
        {
            GestureTwoFingersCommon gesture2Fingers = new GestureTwoFingersCommon();
            SimpleGesture.Instance.twoFingerGestures.Add(gesture2Fingers);
        }

        GestureTwoFingersCommon._instance.SetType(type);
        GestureTwoFingersCommon._instance.AddDelegate(method);
    }
 public override void Delete()
 {
     GestureTwoFingersCommon._instance = null;
 }
    // CONSTRUCTOR: ----------------------------------------------------------------------------------------------------

    public GestureTwoFingersCommon() : base()
    {
        GestureTwoFingersCommon._instance = this;
    }