Basic HTML version of Foils prepared 18 May 97

Foil 32 Using Mouse Events for User Interaction

From Java Tutorial - Spring 1997 Part 3:Graphics and the Abstract Windowing Toolkit Peking Tutorial, Web Certificate -- Spring-Summer 1997. by Nancy J. McCracken,Geoffrey C. Fox
1 We set up a test program that creates 3 movable objects, a rectangle, circle and triangle, as in the earlier example. In this program, we start with them all red. Whenever the mouse is detected to be over one of the objects, its color is changed to cyan. If the mouse button is used to drag the object, we move the object to the mouse location.
2 Note that it is not necessary to introduce a thread for this applet since it is not running continuously - it is mostly waiting for mouse events.
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