How can I obtain a class type variable from an instance? I want to create a second instance of the same descendant class (via the constructor, which will take some parameters and make the new instance unique)
Tobject.classtype returns TClass (class of TObject) which I first assumed would work great. However I cannot seem to do a type conversion from TClass to t_mammal_class (class of t_mammal)! So I am stuck here. I tried just using TClass and skipping t_mammal_class, but then I can't use my overriden constructor that takes special parameters. Thanks in advance, David. On Fri 19 Mar 2010, David Emerson wrote: > Florian Klaempfl wrote: > > Constructor procvars are indeed not supported but the way to achieve > > what you want is to use class type variables > > > > t_mammal_class = class of t_mammal; > > > > function find_or_create_animal (color : byte; > > pass_mammal_type : t_mammal_class) : t_mammal; > > > > brown_pig := t_pig (pig_pen.find_or_create_animal (brown, t_pig)); > > ah, that is exactly what I need. Works perfectly. Thanks much. > > ~D. > > _______________________________________________ > fpc-pascal maillist - fpc-pascal@lists.freepascal.org > http://lists.freepascal.org/mailman/listinfo/fpc-pascal > _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
