Decorations (titlebar buttons)

[Lars Brehmer]

I thought I already asked this, but now I'm not sure because I didn't  
get the usual  replies;

Where can I find the scripts for what the "minimize" button in the  
titlebar actually does when it is clicked?  I need this for both OSX  
and Windows.  I have a project where all stacks have custom shapes (=  
decorations empty), but I don't want users to not NOT see what they  
expect at the top of the windows for closing and minimizing the window.

Cheers,

Lars