Question

Can I enumerate the constants(const) from a class?

I have tried

MyClass = class
const
  c1 = 'c1';
  c2 = 'c2';
  c3 = 'c3';
end;

procedure GetConst();
var
  ctx: TRttiContext;
  objType: TRttiType;
  field: trttifield;
  s: string;
begin
  ctx := TRttiContext.Create;
  objType := ctx.GetType(MyClass.ClassInfo);
  for field in objType.GetDeclaredFields do
    s:= field.Name;
end;

I would like to get c1, c2, c2.

Is this possible?

edit:
what I want to do is define some keys for some external symbols(for a cad program)

symbol1=class
    const
    datafield1='datafield1';
    datafield2='datafield2';
end;
symbol2=class
    const
    datafield21='datafield21abc';
    datafield22='datafield22abc';
end

I don’t like to use fields for this because I prefer not to seperate declareration and initialization.
I can’t use an enum since I can’t define the value as a string.

Answer 1

You can’t get at those constants through RTTI. I suspect your best solution will be to use attributes instead. Not only will that have the benefit of actually working, I think it sounds like a cleaner and simpler solution to your problem.