Full disclosure: I'm very new to Ruby.

The following code seems like it should update the para's text with the app's current dimensions as you resize it. 

```
Shoes.app do  
    stack do  
        @para = para  
    end  
    animate 1 do  
        @para.text = "%d x %d" % [ app.width, app.height]  
    end  
end  

```

But it never changes. I am aware that animation gets blocked during the actual resize operation, but when you let go of the mouse it catches up. So, am I doing something wrong or is this just not implemented on OS X yet?