[fpc-pascal] Is it possible to know the data type of a specialized generics class?

[Xiangrong Fang]

Hi All,

say, I have a class TTree<T>; in the destructor of that class, is it
possible to know the actual type of T? I want to do things like:

generic TTree<T> = class
public
  Data: T;
  destructor Destroy; override;
end;

destructor TTree.Destroy;
begin
  ... ...
  if Data is TObject then Data.Free;
end;

But "is" does not work with generic types.

Regards,
Xiangrong
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