Returns the number of different prefixes used for enumeration values in the current (new) libraries.
ERROR: Syntax information about ILibLookupExtension.EnumValPrefixCount may not be in D:\ArcGIS\DotNet\ESRI.ArcGIS.SystemUtility.dll
[C++]
HRESULT get_EnumValPrefixCount(
long* lCount
);
[C++]Parameters
lCount [out, retval] lCount is a parameter of type long