Has anyone an idea, how I can make TValue using a reference to the original data? In my serialization project, I use (as suggested in XML-Serialization) a generic serializer which stores TValues in an internal tree-structure (similar to the MemberMap in the example).

This member-tree should also be used to create a dynamic setup form and manipulate the data. My idea was to define a property for the Data:

TDataModel <T> = class
  {...}
  private
    FData : TValue;
    function GetData : T;
    procedure SetData (Value : T);
  public
    property Data : T read GetData write SetData;
end;

The implementation of the GetData, SetData Methods:

procedure TDataModel <T>.SetData (Value : T);

begin
FData := TValue.From <T> (Value);
end;

procedure TDataModel <T>.GetData : T;

begin
Result := FData.AsType <T>;
end;

Unfortunately, the TValue.From method always makes a copy of the original data. So whenever the application makes changes to the data, the DataModel is not updated and vice versa if I change my DataModel in a dynamic form, the original data is not affected. Sure I could always use the Data property before and after changing anything, but as I use lot of Rtti inside my DataModel, I do not realy want to do this anytime.

Perhaps someone has a better suggestion?