void OnGUI()
    {
        if (GUI.Button(mDrawingAreaRect, new GUIContent("Hide/Show\n DrawingArea", "Hovering over Hide/Show")))
        {
            mDrawingArea.toggleDrawingAreaVisibility();
        }

        if (GUI.Button(mDrawActivityRect, new GUIContent("StartActivity", "Hovering over StartActivity")))
        {
            DrawActivity.getInstance(this, false, true, true, true, true, true, true, true, true, true).startDrawActivity();
        }

        if (Application.platform == RuntimePlatform.Android)
        {
            if (Input.GetKey(KeyCode.Escape))
            {
                Application.Quit();
                return;
            }
        }
    }