= class Gtk::CheckButton
A Gtk::CheckButton places a discrete Gtk::ToggleButton next to a widget, (usually a Gtk::Label). See the section on Gtk::ToggleButton widgets for more information about toggle/check buttons. 
The important signal ('toggled') is also inherited from Gtk::ToggleButton. 

== Object Hierarchy
* Object
  * GLib::Instantiatable
    * GLib::Object
      * Gtk::Object
        * Gtk::Widget
          * Gtk::Container
            * Gtk::Bin
              * Gtk::Button
                * Gtk::ToggleButton
                  * Gtk::CheckButton

== Class Methods
--- Gtk::CheckButton.new(label = nil, use_underline = true)
    Creates a new Gtk::CheckButton with a Gtk::Label to the right of it.
    If use_underline is true, the label will be created underscores in label indicate the mnemonic for the check button.
    * label : the text label to display next to the radio button.
    * use_underline : true if the label will be created underscores in label indicate the mnemonic for check button.
    * Returns: a new Gtk::CheckButton.
  
--- Gtk::CheckButton.new(stock)
    Creates a new Gtk::CheckButton with a Gtk::Stock constant value.
    * stock: a Gtk::Stock constant value.
    * Returns: a new Gtk::CheckButton.
    
- ((<Masao>))
