How to make TkLabel update immediately?

ruby-talk
1

Hi,

I’m putting out some text in a window using a TkLabel. The problem is
that the text only seems to appear once the method has finished.
Is there a way to make labels update after .configure immediately?

Code example:
btnExit = TkButton.new() do
text "Exit"
command {
label.configure (“text” => ‘Good bye!’) #never appears!
sleep 2
exit
}
end

Thanks!
Ralf.

pm. Is there an “official” tk and/or gtk newsgroup?