JDK Version: jdk1.2, jdk1.2.2
OS: Win98
Locale: zh, C

JDK1.2 provides a scheme, AWTEventListener, to catch awt event that been
dispatched to system event queue. In win32 platform, if the gui component
is swing, such as, JTextArea, the KEY_TYPED key event will be missed by
AWTEventListener, so the event record tool based on this rule will lose
KEY_TYPED event on swing components.
Attahced is two short programs, one is to awt, the other is to swing.
In them, we implement AWTEventListener, and add it to monitor system
event dispatching, we got the following results:

o In Solaris 2.6 platform:
For awt, if we type 'a' once in TextArea, we got one KEY_PRESSED
KeyEvent and one KEY_TYPED KeyEvent.

For swing, if we typed 'a' once in JTextArea, we got two KEY_PRESSED
KeyEvents and one KEY_TYPED KeyEvent.

o In Win98 platform:
For awt, if we type 'a' once in TextArea, we got one KEY_PRESSED
KeyEvent and one KEY_TYPED KeyEvent.

For swing, if we typed 'a' once in JTextArea, we only got two
KEY_PRESSED KeyEvents, no KEY_TYPED KeyEvent was catched.


jim.hu@prc 1999-06-09