Kawa makes it easy to build “rich client” (i.e. GUI) applications using JavaFX. For example the following program will print up a window with a button; clicking on the button will print a message on the console output about the event.
(require 'javafx-defs) (javafx-application) (javafx-scene title: "Hello Button" width: 600 height: 450 (Button text: "Click Me" layout-x: 25 layout-y: 40 on-action: (lambda (e) (format #t "Event: ~s~%~!" e))))
JDK 7 update 9 or later has JavaFX included, but it is a separate
jfxrt.jar which not in the default
JavaFX support is builtin to the pre-built
Assume the above file is
HelloButton1.scm, you can
run it like this:
java -cp $JAVA_HOME/lib/jfxrt.jar:$KAWA_HOME/kawa.jar HelloButton1.scm
If you build Kawa from source, do:
$ ./configure --with-javafx=$JAVA_HOME --enable-kawa-frontend ...other-args...
The resulting Kawa binary sets up the path to
jfxrt.jar so you just need to do:
$ kawa HelloButton1.scm