blocks|key|4644749|text|看起来OS只有在里面有MenuItems的情况下才会显示菜单(这有点奇怪，因为你可以将功能附加到空菜单上)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4644750|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

It looks like OS X only displays the Menus if they have MenuItems inside them (which is a bit weird, as you can attach functionality to empty Menus).

blocks|key|138185|text|我已经成功地使用了下面的代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|138186|MenuBar+menuBar+=+new+MenuBar();
final+String+os+=+System.getProperty("os.name");
if+(os+!=+null+&&+os.startsWith("Mac"))
++menuBar.useSystemMenuBarProperty().set(true);

BorderPane+borderPane+=+new+BorderPane();
borderPane.setTop(menuBar);

primaryStage.setScene(new+Scene(borderPane));|code-block|syntax|javascript|138187|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I've had success with this code:

<pre class="lang-java prettyprint-override"><code>MenuBar menuBar = new MenuBar();
final String os = System.getProperty("os.name");
if (os != null &amp;&amp; os.startsWith("Mac"))
 menuBar.useSystemMenuBarProperty().set(true);

BorderPane borderPane = new BorderPane();
borderPane.setTop(menuBar);

primaryStage.setScene(new Scene(borderPane));
</code></pre>

blocks|key|138200|text|在dmolony的基础上进行了一些修正：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|138201|MenuBar+menuBar+=+new+MenuBar+();
++if(+System.getProperty("os.name","UNKNOWN").equals("Mac+OS+X"))+{
++menuBar.setUseSystemMenuBar(true);
}

BorderPane+borderPane+=+new+BorderPane+();
borderPane.setTop+(menuBar);
primaryStage.setScene+(new+Scene+(borderPane));|code-block|syntax|javascript|138202|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Building on dmolony with some corrections:

<pre><code>MenuBar menuBar = new MenuBar ();
 if( System.getProperty("os.name","UNKNOWN").equals("Mac OS X")) {
 menuBar.setUseSystemMenuBar(true);
}

BorderPane borderPane = new BorderPane ();
borderPane.setTop (menuBar);
primaryStage.setScene (new Scene (borderPane));
</code></pre>

blocks|key|4644823|text|我自己也遇到了这个问题--我注意到系统菜单栏最初不会出现在OSX中，直到我切换到另一个应用程序并返回。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4644824|将setUseSystemMenuBar调用封装在runLater中确实做到了这一点，所以我得出了一个不科学的结论:在OSX成功注册应用程序菜单之前，需要设置更多的窗口。|offset|length|style|CODE|4644825|Platform.runLater(()+->+menuBar.setUseSystemMenuBar(true));|code-block|syntax|javascript|4644826|entityMap^0|0|1|J|P|8|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@$D|Q|E|R|F|G]|$D|S|E|T|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|U|8|@]|9|@]|A|$K|L]]|$1|M|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|N|$]]

I just ran into this issue myself - I noticed that the system menubar wouldn't initially appear in OSX until I switched to another application and back.

Wrapping the <code>setUseSystemMenuBar</code> call in a <code>runLater</code> did the trick, so I unscientifically concluded there's more window setup required before OSX can successfully register an application menu.

<pre><code>Platform.runLater(() -&gt; menuBar.setUseSystemMenuBar(true));
</code></pre>

blocks|key|138250|text|归功于我成功遵循的这篇教程：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|138251|https://blog.codecentric.de/en/2015/04/tweaking-the-menu-bar-of-javafx-8-applications-on-os-x/|offset|length|138252|下面我粘贴最重要的部分，以获得与Win经典菜单栏兼容的OS+X菜单栏：|138253|@Override
public+void+start(Stage+primaryStage)+throws+Exception+{
++++MenuBar+menuBar+=+new+MenuBar();
++++menuBar.useSystemMenuBarProperty().set(true);

++++Menu+menu+=+new+Menu("java");
++++MenuItem+item+=+new+MenuItem("Test");

++++menu.getItems().add(item);
++++menuBar.getMenus().add(menu);

++++primaryStage.setScene(new+Scene(new+Pane(menuBar)));
++++primaryStage.show();
}|code-block|syntax|javascript|138254|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|2M|0|0|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|U|8|@]|9|@$D|V|E|W|1|X]]|A|$]]|$1|F|3|G|5|6|7|Y|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|Z|8|@]|9|@]|A|$K|L]]|$1|M|3|-4|5|6|7|10|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|C]]]]

Credits to this tutorial that I have followed with success:

<a href="https://blog.codecentric.de/en/2015/04/tweaking-the-menu-bar-of-javafx-8-applications-on-os-x/" rel="nofollow noreferrer">https://blog.codecentric.de/en/2015/04/tweaking-the-menu-bar-of-javafx-8-applications-on-os-x/</a>

Below I paste the most important part to get an OS X menu bar compatible with Win classic menu bar:

<pre><code>@Override
public void start(Stage primaryStage) throws Exception {
 MenuBar menuBar = new MenuBar();
 menuBar.useSystemMenuBarProperty().set(true);

 Menu menu = new Menu("java");
 MenuItem item = new MenuItem("Test");

 menu.getItems().add(item);
 menuBar.getMenus().add(menu);

 primaryStage.setScene(new Scene(new Pane(menuBar)));
 primaryStage.show();
}
</code></pre>

I'm unable to make a JavaFX MenuBar show as a standard OS X menu bar, at the top of the screen.

Here's what I've tried in my subclass of Application:

<pre><code>public void start(Stage primaryStage) throws Exception {
 final Menu menu1 = new Menu("File");
 final Menu menu2 = new Menu("Options");
 final Menu menu3 = new Menu("Help");

 MenuBar menuBar = new MenuBar();
 menuBar.getMenus().addAll(menu1, menu2, menu3);
 menuBar.setUseSystemMenuBar(true);

 primaryStage.setTitle("Creating Menus with JavaFX 2.0");
 final Group rootGroup = new Group();
 final Scene scene = new Scene(rootGroup, 800, 400, Color.WHEAT);


 rootGroup.getChildren().add(menuBar);
 primaryStage.setScene(scene);
 primaryStage.show();
}
</code></pre>

I assumed that the use of 

<pre><code>menuBar.setUseSystemMenuBar(true);
</code></pre>

would do the trick, but actually it makes the menuBar disappear altogether.

I'm using Java 1.8.0-b132 on OS X 10.9

How to make an OS X menubar in JavaFX

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我无法在屏幕顶部将JavaFX MenuBar显示为标准的OS X菜单栏。下面是我在我的Application子类中尝试的内容：public void start(Stage primaryStage) throws Exception {    final Menu menu1 = new Menu("File");...

问如何在JavaFX中制作OS X菜单栏
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问如何在JavaFX中制作OS X菜单栏EN