Sounds like you can just have a pointer to PgDatabase in your class
(private: PgDatabase* db_ptr;), and initialize that to the NULL
pointer. Later on you instantiate PgDatabase with "new".
--Yu Cao
On Fri, 20 Aug 1999, inkle c wrote:
> Well, this is where the problem comes because PgDatabase() is a
> protected constructor, myclass doesn't inherit from PgDatabase. In
> simple words:
> ==============================================
> class myclass {
> public:
> myclass();
> private:
> PgDatabase db;
> }
>
> myclass::myclass():db(NULL){
> some-other-stuff-goes-here
> };
> ===============================================
> the above codes causes me trouble as I described
> below, any ideas how to fix it? I also tried
> PgDatabase db as a global variable and init it to
> be NULL, but this causes the same problem.
>
> Thanks.
>
> inkle
>
> --- Patrick Welche <prlw1@newn.cam.ac.uk> wrote:
> > inkle c wrote:
> > >
> > > Hi,
> > >
> > > I am writing a small class which has a PgDatabase
> > > instance as its private member, and in the
> > constructor,
> > > I init it to be NULL (i.e.,
> > > myclass::myclass():PgDatabaseInstanceMember(NULL)
> > ), this causes a core
> > > dump, what's wrong with that?
> >
> > I'm not too sure what you want, but how about
> >
> > myclass::myclass():PgDatabase()
> >
> > ?
> >
> > Cheers,
> >
> > Patrick
> >
>
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