I am trying to make a Signal/Slot system (the kind that Qt uses) for a library I am creating (currently named Crystal Widgets Toolkit) which strives to be something like the .NET framework for C# and the JDK for D. Currently, I've run in to one problem.

How would I pass a delegate as a function parameter? I tried aliasing but that only gives me awkward errors. I don't have the source code at the moment and I'm about to go to bed so I can't give the specific error.

Any help would be gladly appreciated.

-Joshua Cearley
BlackCrystal Software
"Making dreams reality"

void foo(int delegate(char,float,double) arg) { ... }



Note the difference between the way that you declare a delegate type, which is:
	<retval> delegate(<args>)
and the way that you declare a delegate literal, which is:
	delegate <retval>(<args>) { <code> }



Joshua Cearley wrote:
> I am trying to make a Signal/Slot system (the kind that Qt uses) for a
> library I am creating (currently named Crystal Widgets Toolkit) which
> strives to be something like the .NET framework for C# and the JDK for D.
> Currently, I've run in to one problem.
> 
> How would I pass a delegate as a function parameter? I tried aliasing but
> that only gives me awkward errors. I don't have the source code at the
> moment and I'm about to go to bed so I can't give the specific error.
> 
> Any help would be gladly appreciated.
> 
> -Joshua Cearley
> BlackCrystal Software
> "Making dreams reality"