>>   I had to do this for a few things in DFL, like menus. I accomplished it by  storing the reference in malloc'd memory.
>
> I am very interested in this. Where can I find the details?
>

Something like this. It's just an idea, it won't compile as-is:


class Item // Item you want weak references to.
{
   this()
   {
      addItem(this);
   }

   ~this()
   {
      removeItem(this);
   }
}

Item[] refItems; // malloc'd memory holding weak references to Item`s.

void addItem(Item item)
{
   refItems = realloc(refItems, count * Item.sizeof);
   refItems[i] = item;
}

void removeItem(Item item)
{
   int i;
   for(i = 0; i != refItems.length; i++)
   {
      if(item == refItems[i])
      {
         refItems = realloc(refItems, count * Item.sizeof);
         break;
      }
   }
}