ReactFX-如何为CTRL键组合事件创建流？

Question

我是ReactFX新手，我正试图捕获按下的CTRL和C键，以便进行典型的复制操作。

如何有效地将其捕获到流中？到目前为止，我只能做到这一点，但它甚至没有编译.

final EventStream<KeyEvent> keysTyped = EventStreams.eventsOf(myTbl, KeyEvent.KEY_TYPED)
        .reduceSuccessions((a,b) -> new KeyCodeCombination(a.getCode(),b.getCode()), 500);

Answer 1

这对我来说很管用：

    KeyCombination ctrlC = new KeyCodeCombination(KeyCode.C, KeyCombination.SHORTCUT_DOWN);
    final EventStream<KeyEvent> keysTyped = EventStreams.eventsOf(text, KeyEvent.KEY_PRESSED)
            // the following line, if uncommented, will limit the frequency
            // of processing ctrl-C to not more than once every 0.5 seconds
            // As a side-effect, processing will be delayed by the same amount
            // .reduceSuccessions((a, b) -> b, Duration.ofMillis(500))
            .filter(ctrlC::match);
    keysTyped.subscribe(event -> System.out.println("Ctrl-C pressed!"));