PropertyNotification mHandleVerticalLessThanNotification; ///< Notifies when the 'y' coord of the active layer is less than a given value.
PropertyNotification mHandleVerticalGreaterThanNotification; ///< Notifies when the 'y' coord of the active layer is grater than a given value.
PropertyNotification mHandleHorizontalLessThanNotification; ///< Notifies when the 'x' coord of the active layer is less than a given value.
PropertyNotification mHandleVerticalLessThanNotification; ///< Notifies when the 'y' coord of the active layer is less than a given value.
PropertyNotification mHandleVerticalGreaterThanNotification; ///< Notifies when the 'y' coord of the active layer is grater than a given value.
PropertyNotification mHandleHorizontalLessThanNotification; ///< Notifies when the 'x' coord of the active layer is less than a given value.