[fpc-devel] interfaces vs classes in dll

[Michael Van Canneyt]

On Fri, 30 Nov 2007, Paul Ishenin wrote:

> Michael Van Canneyt wrote:
> > No-one. The DLL must be recompiled anyway if you use packages.
> > And this is also true if you use interfaces, so using interfaces
> > will not solve the problem you mention.
> >   
> Only if compiler (who provides package system) changed. Ide changes will not
> cause recompilation of plugins in case of interfaces.

Nono. If the LCL/FCL/RTL changed or whatever, then you must recompile the
DLL as well, since it uses these packages. This will IMHO be 99% of all 
realistic cases.

If *only* the IDE interface changed, and only that, then you are right. 
But in my opinion this will be less than 1% of all possible cases. 
So the decision to use interfaces to cover this 1% is IMHO not founded.

It's like in Delphi.
With each release and update of Delphi, you must recompile all
design/runtime packages, whether the IDE interface changed or not.
(and it uses interfaces too)

Michael.