Remarks 

The $SCOPEDENUMS directive enables or disables the use of scoped enumerations in Delphi code. More specifically, $SCOPEDENUMS affects only definitions of new enumerations, and only controls the addition of the enumeration's value symbols to the global scope.  

In the {$SCOPEDENUMS ON} state, enumerations are scoped, and enum values are not added to the global scope. To specify a member of a scoped enum, you must include the type of the enum. For example:

type
  TFoo = (A, B, Foo);
  {$SCOPEDENUMS ON}
  TBar = (A, B, Bar);
  {$SCOPEDENUMS OFF}

begin
  WriteLn(Integer(Foo)); 
  WriteLn(Integer(A)); // TFoo.A
  WriteLn(Integer(TBar.B));
  WriteLn(Integer(TBar.Bar));
  WriteLn(Integer(Bar)); // Error
end;

Note that this is also valid:

 Writeln(Integer(TFoo.A));

Even though TFoo was not declared with $SCOPEDENUMS ON, the A value can still be explicitly resolved using the enumeration name.