如何在javaFX中右键单击窗格或ImageView时显示上下文菜单 [英] How do i show a context menu when right click on a Pane or an ImageView in javaFX

问题描述

我正在尝试显示我创建的上下文菜单，当我右键单击窗格或图像视图时（（在请求的上下文菜单上））。问题是它们似乎没有 setContextMenue 方法，与标签和按钮等不同。如何将上下文菜单关联到似乎不接受上下文菜单的节点？

I am trying to show a context menu i created, when i right click on a pane or an image view ((on Context Menu Requested)). The problem is they don't seem to have a setContextMenue method, unlike labels and buttons...etc. How can associate a context menu to a node that doesn't seem to accept context menus?

@FXML
Button button1, button2;

@FXML
Pane mainPane;

@FXML
ImageView image;
private void initContextMenu() {
    final ContextMenu contextMenu = new ContextMenu();
    final MenuItem item1 = new MenuItem("open a file");
    final MenuItem item2 = new MenuItem("quit");

    contextMenu.getItems().addAll(item1, item2);

    // not possible
    image.setContextMenu(contextMenu);
    // possible
    button1.setContextMenu(contextMenu)

推荐答案

你可以做到

image.setOnContextMenuRequested(e -> 
    contextMenu.show(image, e.getScreenX(), e.getScreenY()));

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