Thanks to all three of you for your responses--very helpful. As I think
about it, it seems almost intuitive (after a couple days :-) that objects
should be freed by the same class instance in which they were created, if
possible. I appreciated your responses about passing parameters, too, and
started experimenting a little, just to cement my understanding.
I created a class called TSample with a single procedure, test
(sl:TStringList). It's got two lines: sl.Add('TSample'); and
ShowMessage(sl.Text). I experimented with calling the procedure, passing the
stringList in various ways. I understood, I'm happy to say ... except for
this:
Form1's got this code:
sl:=TStringList.Create;
sl.Add('TForm1');
x:=TSample.Create;
x.test(sl);
sl.Add('TForm1 again');
ShowMessage(sl.Text);
sl.Free;
The last ShowMessage has all *three* lines ('TForm1','TSample', and 'TForm1
again'). It seems to me that if it's a *copy* of sl that's passed to the
called procedure, then that last ShowMessage should just have *two* lines
('TForm1' and 'TForm1 again'). In other words, it seems like the procedure
is acting the way I would now predict it would (and does) if I change the
signature to TSample.test (var sl:TStringList).
What do you think?
Thanks, as always -- Al
p.s. I'll stop asking so many questions soon ... don't want to overstay my
welcome :-)
_________________________________________________________________
Express yourself instantly with MSN Messenger! Download today - it's FREE!
http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
_______________________________________________
Delphi mailing list -> [email protected]
http://www.elists.org/mailman/listinfo/delphi
