GtkSpinButton
   Widget offering masked numerical entry and/or selection.
  
Object Hierarchy
Direct subclasses
None.
Description
   
    A GtkSpinButton is a widget offering a displayed
    numerical value which can be incremented or decremented within a pre-set
    range by the user's clicking on one of two arrow buttons, or by using the
    Up and Down arrow keys.
   
   
    The display area is a GtkEntry; the spinbutton
    object currently provides the only built-in means of masking input in
    GTK+.  If you want to restrict the user to the values displayed rather
    than allowing keyboard input, call 
    set_editable()  from the spinbutton.
   
   
    See also:  GtkAdjustment, 
    GtkCombo.
   
  
Constructor
 --
   Creates an editable rotating display of selectable numbers.