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

[Sven Barth]

Am 24.09.2013 11:53, schrieb Xiangrong Fang:
>
>     But it's not a good idea as you'd still need to convert Data to a
>     TObject (e.g. by using a cast), but that will fail if Data is
>     something else than a pointer-like type...
>
> This worked in my TTree class (destructor):
>
>   if PTypeInfo(TypeInfo(Data))^.Kind = tkObject then TObject(Data).Free;
>
> I don't know in what case it will fail? I tested with a TStringTree, 
> could you please give an example that it will fail?
Try something that is not a Pointer, e.g. a Shortstring, a record, or an 
ordinal datatype like QWord.

Regards,
Sven
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