'宣言
Public MustInherit Class _ItemizedPointLegendItemDataModel Inherits _ItemizedLegendItemDataModel Implements IColorLegendItem, IItemizedLegendItemDataModel, IItemizedPointLegendItemDataModel, IQueryInterface, IStyleLegendItem
public abstract class _ItemizedPointLegendItemDataModel : _ItemizedLegendItemDataModel, IColorLegendItem, IItemizedLegendItemDataModel, IItemizedPointLegendItemDataModel, IQueryInterface, IStyleLegendItem