stupidest question contest ...

Hi all ,

How do keep a window (or Dialog ... ) on top of the others no matter where the 
user clicks in the app ... Without freezing the other part of the app , as with 
a 'modal' setting ...

The method button_group() for a radiobutton is in the tutorial but it looks 
like it's not working , i get :
"Can't locate object method "button_group" via package "Gtk::RadioButton" 
at..." . Any comment ?

How do you resize a Box once you have removed one of its children ?
"Can't locate object method "enable_resize" via package "Gtk::VBox" at ..."
"Can't locate object method "need_resize" via package "Gtk::VBox" at ..."
"Can't locate object method "allow_shrink" via package "Gtk::VBox" at ..."
                               ^ 'can't remember where i saw this i tried out 
out of despair :(

I set a signal on a Text , whenever it's changed() it toggles a radio button . 
But after i destroy() the parent Window of the button and change the content of 
the Text ( who's added to another window ) , i get a ippon ! ( i.e. a core dump 
-with no explanation at all- for those who don't understand judo ...;-) 
I tried a 'if(exists($RadioButton)){}' ,'if(defined($RadioButton)){}' , but got 
the same result ! Ippon !
Any idea ?

Thx ...

D@vid.