Hello all,

I might miss the errata for the following codes in the Programming Ruby book:

require 'tk'
TkLabel.new { text 'Hello, World!' }
Tk.mainloop

I tinkered as:

require 'tk'
TkLabel.new {

text 'Hello, World!'

pack

}
Tk.mainloop

to make it work. I wonder how to get rid of the DOS window in the background.

Thanks,

Dat