DWT event handling

[Frank Benoit]

Lester L. Martin II schrieb:
> my code is more simple
> 
> class listen: Listener
>     {
>         void delegate(Event e) func_;
>         
>         this(void delegate(Event e) func = null)
>         {
>             if(func !is null)
>                 func_ = func;
>             else
>                 func_ = &this.genericHandle;
>         }
>         
>         public void handleEvent(Event e) 
>         { 
>             func_(e); 
>         }
>         
>         public void genericHandle(Event e)
>         {
>             Stdout("Event Accepted.").newline.flush;
>         }
>     }
> 
> (user is a declared DWT variable)
> 
> user.addListener(new listen(&dg));
> 
> (this is a function inside a class)
> 
> private void dg(Event E)
> {
>     //handle event here
> }
> 

I think this is just less flexible.
This simple case would be:

user.addListener(dgListener(&dg));
private void dg(Event E)
{
     //handle event here
}

It is the same. But the template can handle _optional_ arguments that 
are stored in a generated template class.

Well actually there is no default-handler. But i do not understand what 
is the use of that. If you do not want a handler, why register a dummy one?