#!/usr/local/bin/wish -f
# Simple Tk script to create a button that prints "Hello, world".
# Click on the button to terminate the program.
# 
# The first line below creates the button, and the second line
# arranges for packer to manage the button's geometry, centering
# it in the application's main window.

button .hello -text "Hello, world" -command {
    puts stdout "Hello, world"; destroy .
}
pack append . .hello {top}