JavaFX setOnScrollStarted 和 setOnScrollFinished 不工作

Question

我想在 javaFX 中实现 onScrollStarted 和 onScrollFinished 但它们没有工作，尽管 setOnScroll 正在工作.示例代码:

    //One Way
    node.setOnScrollStarted(s -> {
        System.out.println("ScrollFinished..");
        node.setCursor(Cursor.E_RESIZE);
    });

    node.setOnScrollFinished(s -> {
        System.out.println("ScrollStarted...");
        node.setCursor(Cursor.DEFAULT);
    });

    //Other Way
    node.addEventFilter(ScrollEvent.SCROLL_STARTED, (x) -> {
        System.out.println("ScrollStarted...");
        node.setCursor(Cursor.DEFAULT);
    });

    node.addEventFilter(ScrollEvent.SCROLL_FINISHED, (x) -> {
        System.out.println("ScrollFinished..");
        node.setCursor(Cursor.E_RESIZE);
    });

以上均无效。其中节点是一个 textField。我做错了什么？

Answer 1

参见 ScrollEvent :

When the scrolling is produced by a touch gesture (such as dragging a finger over a touch screen), it is surrounded by the SCROLL_STARTED and SCROLL_FINISHED events. ... When the scrolling is caused by a mouse wheel rotation, only a one-time SCROLL event is delivered, without the started/finished surroundings

如果您使用鼠标滚轮，您将不会收到这些事件。