How to pass delegates to C functions?

[Mengu]

On Thursday, 3 April 2014 at 17:59:33 UTC, Jeroen Bollen wrote:
> After being downvoted on stackoverflow for no apperant reason, 
> I figured I'd give it a shot here.
>
> How do I pass a delegate to an external C function taking a 
> function pointer?
>
> If you want some extra rep on StackOverflow you can also answer 
> here: 
> http://stackoverflow.com/questions/22845175/pass-delegates-to-external-c-functions-in-d

OT: you've got another upvote!