There are no performance issues that I can see. It's just a local DLL -
same and anything else. Or do you mean using an Interface? Same answer.
However, I originally did an add-in scheme for server based reports using
COM automation servers and this works really well. With a front end plug-in
there is a user inerface and I couldn't figure out how to pass a TWinControl
(or any other VCL pointer) via COM marshalling. Using Interfaces without
COM objects works ok, except that I get a runtime error 216 or 217 when the
DLL shuts down. On Win95 you must reboot.
I was going to have another go at using a COM DLL and see if this solves the
problem.
>
>Peter, what is the performance like using this method ?
>I have been thinking of doing a similar thing for our next project, but the
>performance was the only thing that I thought might hinder this method.
>
>Cheers, Jeremy Coulter
>
> > -----Original Message-----
> > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On
> > Behalf Of Peter G Jones
> > Sent: Thursday, 16 March 2000 00:27
> > To: Multiple recipients of list delphi
> > Subject: Re: [DUG]: Embedded Form
> >
> >
> > I'm not sure I see your problem but I think interfaces would get around
> > this.
> >
> > > > We've been doing this since D3. I'm now combining this with a
>plug-in
> > > > mechanism so that the embedded forms are contained in a DLL.
> > >
> > >The biggest annoyance with the DLL idea is our dependance upon
> > polymorphism
> > >through the 'is' operator... I haven't experimented with packages, but
>I
> > >understand
> > >this alleviates this particular problem...
> >
> > ______________________________________________________
> > Get Your Private, Free Email at http://www.hotmail.com
> >
> > ------------------------------------------------------------------
> > ---------
> > New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED]
> > Website: http://www.delphi.org.nz
> >
>
>
>---------------------------------------------------------------------------
> New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED]
> Website: http://www.delphi.org.nz
______________________________________________________
Get Your Private, Free Email at http://www.hotmail.com
---------------------------------------------------------------------------
New Zealand Delphi Users group - Delphi List - [EMAIL PROTECTED]
Website: http://www.delphi.org.nz
