在javafx中向窗格添加上下文菜单

Question

我正在尝试创建当我点击鼠标右键时显示​​的上下文菜单 但它看起来我只能将上下文菜单添加到控件中 这是我的代码

MenuItem copy = new MenuItem("Copy");
            MenuItem paste = new MenuItem("Paste");
            MenuItem cut = new MenuItem("Cut");

            edit.getItems().addAll(copy,paste,cut);

            ContextMenu contextMenu = new ContextMenu();

            contextMenu.getItems().addAll(copy,cut,paste);

            pane.setContextMenu(contextMenu);

            pane.addEventHandler(MouseEvent.MOUSE_PRESSED, event -> {
            if (event.isSecondaryButtonDown()) {
                System.out.println("asasasa");
                    contextMenu.show(pane, event.getScreenX(), event.getScreenY());
            } else
                    contextMenu.hide();
            });