The return value is a BuiltInTypesEnum enumerator value that represents the data type of the
current object.  For instance, if the data type is a string, the return value would be Type_String.
      
    
            
<DllImport(uCalcDLL, CharSet:=CharSet.Ansi, CallingConvention:=CallingConvention.Cdecl, EntryPoint:="Index")> _
Private Function Index__(ByVal DataTypeHandle As IntPtr) As  BuiltInTypesEnum
End Function
            
          
        
            
[DllImport(uCalcDLL, CharSet=CharSet.Ansi, CallingConvention=CallingConvention.Cdecl, EntryPoint="Index")]
protected static extern  BuiltInTypesEnum Index_(IntPtr DataTypeHandle);
            
          
        
            
{DLLImport}function Index__(DataTypeHandle: System.Pointer):  BuiltInTypesEnum; cdecl; external uCalcDLL name 'Index';
            
          
        
            
typedef  BuiltInTypesEnum (* __Index)(void *DataTypeHandle); 
            
          
        
            
[DllImport(uCalcLib, CharSet=CharSet::Ansi, CallingConvention=CallingConvention::Cdecl, EntryPoint = "Index")]
static BuiltInTypesEnum Index_(void *  DataTypeHandle);