Creates an unknown coordinate system.
Windows, Solaris, Linux
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.|
|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.|
|ISpatialReference4||Provides access to additional members that control a SpatialReference.|
|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.|
|IUnknownCoordinateSystem||Indicator interface that identifies an Unknown coordinate system.|