GtkToggleButton
   Button that retains its state.
  
Object Hierarchy
Direct subclasses
Description
   
    A GtkToggleButton is a button that will retain
    its state following activation.  This can be either the active state, 
    GtkStateType GTK_STATE_ACTIVE, 
    or the normal state, GTK_STATE_NORMAL.  The active
    state has the appearance of a button that has been pressed down and not
    released.
   
   
    The "toggled" signal is
    emitted as part of the process when the button is activated.  Activation
    also triggers a change from the current state to its opposite value.
   
   
    GtkToggleButton also provides some base elements
    for GtkCheckButton and
    GtkRadioButton widgets.
   
  
Constructor
 --
   Creates a button that can be toggled between two states.
  
Signals
"toggled" 
    Emitted when the toggled()  
    method is called.
   
Properties
draw_indicator: 
    Toggle indicator display.