其他的getButton都能用，就判断鼠标中键滚轮事件那里的报错:Cannot resolve method 'getButton' in 'ScrollEvent'

Question

package sample;
import java.awt.Point; import java.util.LinkedList;
import javafx.application.Application; import
javafx.geometry.Point2D; import
javafx.geometry.Pos; import javafx.scene.Scene;
import javafx.scene.control.Button; import
javafx.scene.input.MouseButton; import javafx.scene.input.MouseEvent; import javafx.scene.layout.VBox; import
javafx.scene.paint.Color; import javafx.scene.robot.Robot; import javafx.stage.Stage;
public class Main extends Application {
/**
 * 内部类，将每次鼠标的行为以及坐标记录下来
 */
class MyMouseEvent {
    // 鼠标行为
    MouseButton mb;
    // 坐标
    public Point2D point2D;
    // MIDDLE代表鼠标中键
    public static final MouseButton MIDDLE = MouseButton.MIDDLE;
    public MyMouseEvent(MouseButton mb, Point2D point2D) {
        this.mb = mb;
        this.point2D = point2D;
    }
}
@Override
public void start(Stage stage) throws Exception {
    // 创建面板
    VBox pane = new VBox();
    // 对齐方式
    pane.setAlignment(Pos.TOP_LEFT);
    // robot关键对象
    Robot robot = new Robot();
    // 记录鼠标行为
    LinkedList<MyMouseEvent> list = new LinkedList<>();
    // 开始
    Button beginb = new Button("开始");
    beginb.setStyle("-fx-text-fill: red");
    // 结束
    Button endb = new Button("结束");
    endb.setStyle("-fx-text-fill: red");
    pane.getChildren().addAll(beginb, endb);
    // 点击“开始”按钮时，鼠标行为储存进列表
    beginb.setOnAction(e -> {
        pane.setOnMouseDragged(m -> {
            list.add(new MyMouseEvent(m.getButton(), new Point2D(m.getSceneX(), m.getSceneY())));
        });
        pane.setOnMousePressed(m -> {
            list.add(new MyMouseEvent(m.getButton(), new Point2D(m.getSceneX(), m.getSceneY())));
        });
        pane.setOnMouseReleased(m -> {
            list.add(new MyMouseEvent(m.getButton(), new Point2D(m.getSceneX(), m.getSceneY())));
        });
        // 针对鼠标中键的滚轮事件
        pane.setOnScroll(s -> {
            // 判断是否为鼠标中键滚轮事件
            if (s.getButton() == MyMouseEvent.MIDDLE) {
                double deltaY = s.getDeltaY();
                System.out.println("滚轮事件：deltaY = " + deltaY);
            }
        });
    });
    // 点击“结束”按钮时，鼠标行为储存进列表
    endb.setOnAction(e -> {
        for (MyMouseEvent m : list) {
            // 判断是否为鼠标中键按动事件
            if (m.mb == MyMouseEvent.MIDDLE) {
                System.out.println("中键按动事件：(" + m.point2D.getX() + ", " + m.point2D.getY() + ")");
            } else {
                System.out.println("鼠标" + m.mb.toString() + "：" + "(" + m.point2D.getX() + ", " + m.point2D.getY()
                        + ")");
            }
        }
    });
    Scene scene = new Scene(pane, 500, 500);
    stage.setScene(scene);
    stage.show();
}
public static void main(String[] args) {
    launch(args);
}
}

Answer 1

问题： 其他的getButton都能用，就判断鼠标中键滚轮事件那里的报错:Cannot resolve method 'getButton' in 'ScrollEvent'

内容： package sample; import java.awt.Point; import java.util.LinkedList; import javafx.application.Appli

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