hello, I'm a newbie too
could you please tell me :

> In any case each one of this GT let you can generate your
> events that are catched by the "mainloop" even if they are
> not GUI events (i.e. sockets, filehandlers,...)
how you do this with tk ?
> 
> Using ruby you can use the global variables (starting with $) trick.
> You tie a global variable to a method. When the variable state
> changes, the method is called.
> In other words an Observer is implemented as build-in in
> the language.
and this ?

thx,
jf