Possible to do receive on a delegate?

[Bienlein]

Hello,

I was wondering whether it can be done somehow to select on a 
delegate in the receive block when spawning a thread:


void spawnedFunc(Tid tid)
{
     // Receive a message from the owner thread.
     receive(
         (int i) { writeln("Received the number ", i);}
	(delegate d) { writeln("Receiving a delegate");}	
     );
}

int delegate() dg;

void main()
{
   // Start spawnedFunc in a new thread.
   auto tid = spawn(&spawnedFunc, thisTid);

   // Send the number 42 to this new thread.
   send(tid, 42);

   int a = 7;
   int foo() { return a + 3; }
   dg = &foo;

   send(tid, dg);
}

My solution of course doesn't compile.
Thanks for any hint, Bienlein