[fpc-devel] interfaces vs classes in dll

[Michael Schnell]

> One advantage is that it can be easely used on many languages,
> althougth the usefulness of that for ideintf is probably very small.
>   
I suppose you mean programming languages not spoken languages.

But Interface is a Delphi language keyword. I don't see what this has to 
with C or whatever.

To interface Delphi Language "Interfaces" with other programming 
languages additionally to the Delphi language construct a common ABI 
needs to be defined.

I do see that in Windows this is the case with a Delphi language 
"Interface" assigned to a Windows "COM" interface, which "on the other 
site" can have an interface to a function written in any language (as a 
DLL, OLE thingy or whatever). But as FP is supposed to be OS 
independent, the ABI between the FOP program and "the other site" needs 
to be done without Windows specs.

-Michael