'宣言
Public Class _ExcelWaterfallConnectingLineDefinition Inherits _WaterfallConnectLineDefinition Implements IOverlayDefinition, IQueryInterface, IWaterfallConnectLineDefinition
public class _ExcelWaterfallConnectingLineDefinition : _WaterfallConnectLineDefinition, IOverlayDefinition, IQueryInterface, IWaterfallConnectLineDefinition