容器控件

扩展器

Gtk::Expander 容器只能有一个子类。这个子类可以显示或者隐藏。你可以通过点击扩展器文本左边的三角形来显示或者隐藏子类。上图显示了点击前喝点击后的两种状态。

#!/usr/bin/env ruby
require 'gtk2'

window = Gtk::Window.new
window.set_border_width 10
window.set_size_request 200, -1
window.set_title "Expanders"

window.signal_connect('delete_event') { false }
window.signal_connect('destroy') { Gtk.main_quit }

expander = Gtk::Expander.new "Click _Me For More!"
label = Gtk::Label.new "Hide me or show me,\nthat is your choice."
expander.add label

# make the child (label) visible
expander.expanded = true

window.add expander
window.show_all
Gtk.main