|
|
Event Objects
- When you receive an event either in
handleEvent() or in another event method, the event you receive is
described by an Event object defined in (java.awt.Event).
- An event object contains a number of public
variables that describe the event. For example, the most often used is
event.target, which is the originator of the event. Thus, if a button is
pressed and an action event is posted, the target field will equal
the button that generated the event.
- The following table outlines some of the
other properties
| Value |
Description |
| Object target |
The object receiving the event. |
| long when |
Event time stamp. |
| int id |
The type of the event. |
| int x |
The x coordinate of the event. |
| int y |
The y coordinate of the event. |
| int key |
The key that was pressed, if any. |
| int modifiers |
The state of the modifier keys, if any. |
| int clickCount |
The number of consecutive mouse clicks, if any. |
| Object arg |
An arbitrary argument. |
- You can easily use any of this information in
your event handling logic in order to perform tests, debugging or anything
else.
Additional Resources:
Event Propagation
Table of Contents
Event Modifiers
|
|
