

        \\\\\\\\\\\\\\\\\\\\ ///////////////////////

        example programs using the zoom object

        //////////////////// \\\\\\\\\\\\\\\\\\\\\\

1.zoom_display/

  This program creates an image object which displays the ball image.
  Then, a zoom object is created, and is associated with the same information
  as the image object.  Without installing any event handlers, the zoom
  object will automatically zoom in on the image displayed in the image object
  when the pointer is moved across the image, since they are both using the 
  same data object.

  A button created beneath the image has a callback installed which will
  switch the zoom update mode from "Continuous" to "Button Press" and 
  vice versa.

2.zoom_multifactor/

  This program displays an image object containing the mandril; underneath
  the image object are four zoom objects, each zoom object using a zoom factor
  that is larger than the last.  Without installing any event handlers, the
  zoom objects will automatically update as the user clicks within the image
  object, since each zoom object uses the same data object as the image object.  

