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

	mapview	BMKBackgroundRoadNetView
	needDrawRoadName	BMKBackgroundRoadNetView
	needDrawRoadNet	BMKBackgroundRoadNetView
	needDrawRoadTraffic	BMKBackgroundRoadNetView
-	renderWithMapStatus:enable3D:fitScale:mapScreenExtOffset:	BMKBackgroundRoadNetView
	roadNameFont	BMKBackgroundRoadNetView
	roadNameStrokeColor	BMKBackgroundRoadNetView
	roadNameStrokeWidth	BMKBackgroundRoadNetView
	roadNameTextColor	BMKBackgroundRoadNetView
	roadNetColor	BMKBackgroundRoadNetView
	roadTrafficColor	BMKBackgroundRoadNetView