Exporting classes and interfaces from DLL

[Yossarian]

Dne Wed, 14 May 2008 16:40:02 +0200 Pragma <eric.t.anderton at gmail.com>  
napsal/-a:

> Yossarian Wrote:
>
>> Hi, I've got following problem:
>> I have interface, with some defined functions, + some another classes
>> derived from it in EXE ( kind of Variant type ).
>>
>> class iObject { }
>> class integerConst : iObject { }
>> class stringConst : iObject { }
>> final export T as(T)(iObject n) { if (cast(T)(n) == null) throw new
>> exception; return (cast(T)(n)); }
>>
>> I want to make plugin interface - and to export these classes to it.  
>> When
>> i statically link the DLL code with
>> my interface code, the DLL's string isn't the same as EXE's string.
>> (Another problem is, that the exception thrown from DLL isn't catched in
>> EXE, but falls through and program crashes, but never mind)
>>
>> So, I moved all of the interface code into new DLL, and link my plugina
>> and EXE against it.
>> And there comes the problem :
>>
>> export class integerConst : iObject { } -> doesn't export anything.
>> When I export all of the (public) function, there still remains some
>> other, which are hidden,
>> is there any way how to export them, or with these classes I should say
>> goodbye to plugins?
>
> I prepared this a long time ago, but it should still be relevant:
>
> http://www.wikiservice.at/wiki4d/wiki.cgi?BestPractices/DLL
>
> Does this help you with your problem, or at least explain what's wrong?
>
In fact, it only confirmed me, where the problem is.

I think, that when i export the whole class :
export class C { }
it should export also type information and constructors (ie. default  
constructor) as well (according to documentation),
and other classes / whatever depending on the library should import type  
information from it.


> - Pragma



-- Yossarian
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