Returns an enumeration of current geoprocessing layers.
[Visual Basic 6.0] Function GetGPLayers As IEnumGPValue
[Visual Basic .NET] Public Function GetGPLayers ( _ ) As IEnumGPValue
[C#] public IEnumGPValue GetGPLayers ( );
[Java] public IEnumGPValue getGPLayers ( ) throws IOException, AutomationException
[C++] HRESULT GetGPLayers( IEnumGPValue** ppValues );