Re: [fpc-devel] Which of them are right (Delphi or FPC)

[Michael Van Canneyt]

On Tue, 18 Apr 2006, Amir Aavani wrote:

I developed a project in lazarus (FPC) and now when I try to run it in Delphi, it acts incorrect!

I have a class TObjectCollection which is a collection of TObject:
TObjectCollection= class (TObject)
    FMembers: array of TObject;
     ...
      ...
  public
    property Member [Index: Integer]: TObject read GetMember;
    ...
    procedure Add (ANewMember: TObject);
    ...
end;

And A TObject1Collection which is like this:
TObject1Collection= class (TObjectCollection)
    function GetMember: TObject1;
     ...
      ...
  public
    property Member [Index: Integer]: TObject1 read GetMember;
    ...
    procedure Add (ANewMember: TObject1);
    ...
end;

procedure TObject1Collection.Add (ANewMember: TObject1);
begin
(Self AS TObjectCollection).Add (ANewMember AS TObject);
end;

procedure TObject1Collection.GetMember: TObject1;
begin
Result:= (Self AS TObjectCollection).Member AS TObject1;end;
end;

The code works correctly in lazarus, but in Delphi, the procedure TObject1Collection.Add call itself instead of TObjectCollection.Add. I changed the code like this:

SelfAsTObjectCollection:= Self As TObjectCollection;
SelfAsTObjectCollection.Add (ANewMember);
and the problem solved.
I want to know, which of us (me, Delphi, Freepascal) is wrong.

For delphi you must use the 'overload' directive.

Michael.
_______________________________________________
fpc-devel maillist  -  fpc-devel@lists.freepascal.org
http://lists.freepascal.org/mailman/listinfo/fpc-devel