Re: Re; [OT] Best way to isolate a GUI?

["Bobby D. Bryant" <bdbryant@mail.utexas.edu>]

On Mon, 17 Feb 2003 08:25:06 +0100, Jano wrote:

> Anyways, I not need to be secretive about my project, since is a
> personal one. I'm trying to implement a basic Gnutella servant, just to
> improve my skills in Ada. You see now what's the core and what's the
> GUI...

It's still not clear (to me) from your posts what exactly you're asking.
Are you saying you want to write a client for Gnutella?  And when you say
you want to "isolate the GUI", are you saying that you want a run-time
isolation, or that you want the code separated out so that you can replace
it with a different GUI without having to modify your "core" application
code?

In the latter case the answer is obvious: put your "core" code in one or
more Ada packages and put your GUI code in others.  This will take some
planning ahead, since GUI-based applications tend to be driven by the GUI
and only access the "core" code as callbacks; you will need to think
carefully about what sort of callbacks will be common across various GUIs,
and define your "core" package(s) on the basis of those requirements.

If you want a run-time separation, you still need to give a clearer
explanation of what kind of separation you want.  If you just want to
write a client for Gnutella you will have to write your client to use
whatever communication protocol Gnutella is based on, which is only an Ada
question when it comes down to "how do I implement that?".

-- 
Bobby Bryant
Austin, Texas