[fpc-devel] interfaces vs classes in dll

[Paul Ishenin]

Michael Van Canneyt пишет:
> On Thu, 29 Nov 2007, Mattias Gaertner wrote:
>
>   
>> Lazarus has the IDEIntf, the API for IDE plugins.
>>
>> What is better in this case: classes or interfaces?
>>     
>
> Classes:
> - No reference counting mess. 
> - Easier to grasp conceptually.
>   
In plugin dll?
> - You can use ansistrings. Interfaces require widestrings. (olestrings to be exact)
>   
Who told you this? Interface <> com object

>> What if someday there are packages? 
>>     
>
> It'll work transparantly.
>
>   
>> What if someday there is a closed source dll plugin?
>>     
>
> If it is a package, there is no problem.
>   

And even after extending class old class dependant plugins will work? How?

Best regards,
Paul Ishenin.