Creates an unknown coordinate system.
Use the ISupportErrorInfo method InterfaceSupportsErrorInfo to determine if the object supports extended error information. If the object supports extended error info, VC++ developers should use the OLE/COM IErrorInfo interface to access the ErrorInfo object. Visual Basic developers should use the global error object Err to retrieve this extended error information.
|IClone (esriSystem)||Provides access to members that control cloning of objects.|
|ICompareCoordinateSystems||Provides modified equality tests for spatial references.|
|IConstructUnknownCoordinateSystem||Provides method to define the properties of an unknown coordinate system.|
|IESRISpatialReference||Provides access to members that control the import/export operations components of a spatial reference system. This interface has been deprecated and IESRISpatialReferenceGEN should be used.|
|IESRISpatialReferenceGEN||Provides access to members that generate well known string (WKS) representations of spatial reference objects. IESRISpatialReference has been deprecated and IESRISpatialReferenceGEN should be used.|
|IPersist||Defines the single method GetClassID, which is designed to supply the CLSID of an object that can be stored persistently in the system. IPersist is the base interface for three other interfaces: IPersistStorage, IPersistStream, and IPersistFile.|
|ISpatialReference||Provides access to members that control a SpatialReference.|
|ISpatialReference2||Provides access to additional members that control a SpatialReference.|
|ISpatialReference2GEN||Provides access to additional members that control a SpatialReference. ISpatialReference2GEN is generic version of ISpatialReference.|
|ISpatialReferenceInfo||Provides access to members that control the properties common to all components of a spatial reference system.|
|ISpatialReferenceResolution||Provides access to members that control the resolution of a spatial reference.|
|ISpatialReferenceTolerance||Provides access to members that specify the spatial and M tolerances of a spatial reference.|
|ISupportErrorInfo||Indicates whether a specific interface can return Automation error objects.|
|IUnknownCoordinateSystem||Indicator interface that identifies an Unknown coordinate system.|