Hello.

 I am making an event oriented aplication with Ruby/Gtk. I like a class
 Transaction for data editing. Each Transaction can have one or more windows
 for edition.

 My question is: how can I control in this type of application instances of
 Transaction? Perhaps with a class variable in Transaction? Any other great
 idea? What do you think of it?.

 Of course, this message is an opinion request more than a help cry :)

 Any idea will be greatly apreciated. Thanks.

 															David