pass a delegate to an API as a context pointer?

[teo]

teo Wrote:

> Russell Lewis Wrote:
> > Your code below shouldn't work because void* is 4 bytes (a single 
> > pointer) whereas a delegate is 8 bytes (two pointers).  But you can do this:
> 
> So, my only chance is if I wrap the delegate somehow. Thanks Russell.

By the way, I tried to pass the address of the delegate like this:

(for details see my first post in this thread)
void test(foo f)
{
	xyz(cast(callback)&handler, cast(void*)&f);
}

Unfortunately I wasn't able to convert it back to delegate later in the callback:

static void handler(void *context)
{
	foo f = *(cast(foo*)context);
	int i = f();	// call A.abc();
}

It simply crashes. The context value is exactly the same as &f (in test). Any ideas why? Russell? Kirk?