[lazarus] Stange error message
Michael Van Canneyt
michael.vancanneyt at wisa.be
Thu Jun 22 11:02:01 EDT 2000
On Thu, 22 Jun 2000, Robert Scott Horning wrote:
> Marc Weustink wrote:
> > At 01:50 22-06-2000 +0200, Marc Weustink wrote:
> > >When compileing my new selection stuff I get the following error:
> > >
> > >controlselection.pp(140,1) Error: Symbol can't be published, can be only a
> > >class
> > I found the error.
> > In my implementation section I declared the following
> > type
> > TMyControl = class(TControl);
> > const
> > blah....
> > constructor.... etc.... all implementation stuff
> > Unlike Delphi, FPC doesn't like this, it wants an end statement after a
> > class. It should be declared as:
> > type
> > TMyControl = class(TControl)
> > end;
No it does not. The following compiles fine:
TMyClass = Class (Tobject);
If you look in sysutils, you will see many such declarations for exceptions.
> > Marc
> I'm kinda curious about this construct. In Delphi, when you declare something
> TMyControl = class(TControl);
> this is a forward class reference, so you can use a reference to a class that
> hasn't been defined yet.
No, it is not. The above is a _complete_ class definition.
The following is a forward class reference:
TMyControl = Class;
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