AutoCAD Map 3D 2009 Geospatial Platform Reference From AutoCAD Map 3D Geospatial Platform API previous page next page Overview Modules Classes MgLayerGroupCollection Add Clear Contains Contains GetCount GetItem GetItem IndexOf IndexOf Insert Remove RemoveAt SetItem void MgLayerGroupCollection::Clear ( ) Removes all layer groups from the collection. .NET Syntax void Clear(); Java Syntax void Clear(); PHP Syntax void Clear(); Returns:Returns nothing. previous page start next page