ArcObjects Library Reference (Carto)

IGroupLayer Interface

Provides access to members that control a collection of layers that behaves like a single layer.

Product Availability

Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.

Description

The IGroupLayer interface provides methods for managing the contents of GroupLayers. Use the ILayer interface to set properties for the GroupLayer, or use the appropriate interface to adjust properties of the constituent layers.

Members

		Description
	Add	Adds a layer to the end of the group.
	AreaOfInterest	The default area of interest for the layer.
	Cached	Indicates if the layer needs its own display cache.
	Clear	Removes all layers from the group.
	Delete	Removes the specified layer from the group.
	Draw	Draws the layer to the specified display for the given draw phase.
	Expanded	Indicates if the group's entry is expanded in the TOC.
	MaximumScale	Maximum scale (representative fraction) at which the layer will display.
	MinimumScale	Minimum scale (representative fraction) at which the layer will display.
	Name	Layer name.
	ShowTips	Indicates if the layer shows map tips.
	SpatialReference	Spatial reference for the layer.
	SupportedDrawPhases	Supported draw phases.
	TipText	Map tip text at the specified location.
	Valid	Indicates if the layer is currently valid.
	Visible	Indicates if the layer is currently visible.

Inherited Interfaces

Interfaces	Description
ILayer	Provides access to members that work with all layers.

CoClasses that implement IGroupLayer

CoClasses and Classes	Description
BasemapLayer	Layer containing a Basemap.
GroupLayer	A collection of layers that behaves like a single layer.

Remarks

A group layer is a special case of a composite layer. Custom layer implementations of IGroupLayer are rarely needed, but when done it is importat to implement ICompositeLayer as well.