成员的完整列表，这些成员属于 QUserLocationCompassPresentation,包括所有继承而来的类成员

	compassImage	QUserLocationCompassPresentation
	directionEast	QUserLocationCompassPresentation
	directionNorth	QUserLocationCompassPresentation
	directionSouth	QUserLocationCompassPresentation
	directionWest	QUserLocationCompassPresentation