Black Arrow Status Item

I am working on a IM client for OS X, and I have the design in mind, but I need help with the code. On Snow Leopard, when you click a dock item, you get something like this:

Image 1 http://img688.imageshack.us/img688/8199/screenshot20091121at223.png

What I was thinking of was something like that: (photoshop)

Image 2 http://img442.imageshack.us/img442/4860/sanstitre1kfy.jpg

This is the basic idea, but it has to be resizable so that it can include more stuff, like so (still photoshop).

Image 3 http://img121.imageshack.us/img121/3578/longversion.jpg

I would need a basic implementation of it, and I can easily sub-vie开发者_如何学编程w it to do the insides, but it has to be resizable easily.

Any help appreciated!

See MAAttachedWindow ...