[fpc-devel] Newbie question: how does the compiler know the class type of an object ( the Is operator)

[Howard Page-Clark]

On 21/08/2014 11:16, Dennis Poon wrote:
> I am just curious, what is the instance size of an Tobject?

program Project1;

uses classes;
begin
   WriteLn('InstanceSize of TObject=',TObject.InstanceSize);
   ReadLn;
end.