blocks|key|4046372|text|我在macbook上也遇到了同样的问题，我找到了一个解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4046373|如果使用Ubuntu，一个肮脏的解决方法是关闭所有VirtualBox，然后编辑~/.VirtualBox/VirtualBox.xml文件。找到一行，并将值更改为true。如果在编辑该文件时仍在运行任何进程，则一旦进程更新该文件，这些更改很可能会消失。|blockquote|offset|length|style|CODE|4046374|(来源)|4046375|如果您找不到这一行(就像我的例子)，只需添加这一行。|4046376|在OS上，您可以在VirtualBox.xml+dir中找到/Users/<username>/Library/VirtualBox。|entityMap|0|LINK|mutability|MUTABLE|url|https://forums.virtualbox.org/viewtopic.php?f=7&t=44283^0|0|14|S|2A|4|0|1|2|0|0|0|9|E|U|10^^$0|@$1|2|3|4|5|6|7|V|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|W|8|@$E|X|F|Y|G|H]|$E|Z|F|10|G|H]]|9|@]|A|$]]|$1|I|3|J|5|6|7|11|8|@]|9|@$E|12|F|13|1|14]]|A|$]]|$1|K|3|L|5|6|7|15|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|16|8|@$E|17|F|18|G|H]|$E|19|F|1A|G|H]]|9|@]|A|$]]]|O|$P|$5|Q|R|S|A|$T|U]]]]

I faced the same issue on my macbook pro and I found a solution:

<blockquote>
 A dirty workaround if using Ubuntu is to shut down all VirtualBox, and then edit the <code>~/.VirtualBox/VirtualBox.xml</code> file. Find the line
 
 <pre class="lang-xml prettyprint-override"><code>&lt;ExtraDataItem name="GUI/Toolbar" value="false"/&gt;
</code></pre>
 
 and change the value to <code>true</code>.
 
 If any process were still running when edited the file, the changes will most likely be gone once the processes update the file.
</blockquote>

(<a href="https://forums.virtualbox.org/viewtopic.php?f=7&amp;t=44283" rel="noreferrer">Source</a>)

In case you don't find this line (like in my case) simply add this line.

On OS X you can find <code>VirtualBox.xml</code> in <code>/Users/&lt;username&gt;/Library/VirtualBox</code> dir.

blocks|key|2227002|text|奇怪..。但是，您也要确保菜单中选择了适当的选项。就这么说了。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2227003|回到Oracle管理器，|ordered-list-item|2227004|右击虚拟机，转到|2227005|然后转到用户界面。|2227006|确保所有菜单选项都是蓝色高亮显示的。|2227007|确保选项看起来像这样。|2227008|📷|atomic|offset|length|2227009|点击“应用”和/或“确定”(不记得是哪一个)|2227010|回到虚拟机，按Ctrl+%2B+home键|2227011|使用箭头键向下查看，然后选择显示菜单栏。|2227012|解决了。|2227013|请注意..。如果你没有看到菜单后按下Ctrl+%2B+home。尝试按ctrl+%2Bc，然后按ctrl+%2B+home。|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://i.stack.imgur.com/mPa2l.png|imageAlt^0|0|0|0|0|0|0|0|1|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|19|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|1A|8|@]|9|@]|A|$]]|$1|E|3|F|5|D|7|1B|8|@]|9|@]|A|$]]|$1|G|3|H|5|D|7|1C|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|1D|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|1E|8|@]|9|@]|A|$]]|$1|M|3|N|5|O|7|1F|8|@]|9|@$P|1G|Q|1H|1|1I]]|A|$]]|$1|R|3|S|5|D|7|1J|8|@]|9|@]|A|$]]|$1|T|3|U|5|D|7|1K|8|@]|9|@]|A|$]]|$1|V|3|W|5|D|7|1L|8|@]|9|@]|A|$]]|$1|X|3|Y|5|6|7|1M|8|@]|9|@]|A|$]]|$1|Z|3|10|5|6|7|1N|8|@]|9|@]|A|$]]]|11|$12|$5|13|14|15|A|$16|17|18|-4]]]]

Weird.. but you want to also make sure the menu has the proper options selected. so by.

<ol>
<li>going back to the Oracle VM VirtualBox Manager, </li>
<li>right click your virtual machine, go to setting</li>
<li>then go down to user interface.</li>
<li>make sure all your menu options are highlighted blue. </li>
</ol>

make sure the options look like this.

<a href="https://i.stack.imgur.com/mPa2l.png" rel="noreferrer"><img src="https://i.stack.imgur.com/mPa2l.png" alt="enter image description here"></a>

<ol start="5">
<li>hit apply and/or ok (cant remember which one)</li>
<li>go back to your virtual machine, press Ctrl + home</li>
<li>use the arrow keys to go down to view then select show menu bar.</li>
</ol>

solved.

do note.. if u don't see the menu after pressing Ctrl + home. try pressing ctrl + c then ctrl + home.

blocks|key|2226897|text|为了将键盘和鼠标的所有权返回到您的主机操作系统，VirtualBox在您的键盘上为自己保留了一个特殊的键：“主机键”。默认情况下，它是windows机器上键盘上的右控制键和Mac上的左命令键。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|entityMap^0^^$0|@$1|2|3|4|5|6|7|C|8|@]|9|@]|A|$]]]|B|$]]

To return ownership of keyboard and mouse to your host operating system, VirtualBox reserves a special key on your keyboard for itself: the &quot;host key&quot;. By default, it is the right Control key on your keyboard on a windows machine and left Command key on a Mac.

blocks|key|4046419|text|我正在扯头发，直到我注意到Ubuntu16.04将菜单不是放在窗口，而是放在屏幕的顶部(状态？)酒吧。我没有最大化的窗口，因为我不想看到多余的空白，所以窗口也有一个酒吧，这是我正在看的地方。)这是一天中最重要的时刻。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|entityMap^0^^$0|@$1|2|3|4|5|6|7|C|8|@]|9|@]|A|$]]]|B|$]]

I was tearing out my hair until I noticed that Ubuntu 16.04 puts menus not on the window but at the top of the screen (status?) bar. I didn't have the window maximized because I did not want to see excess white space, so the window has a bar also and that is where I was looking. :) noob moment of the day for sure.

blocks|key|4046344|text|我来到这里是为了找到一个解决方案，突然我有了一种预感，觉得有什么东西干扰了处理主机密钥的来宾窗口。我发现我启用了“当按下控制键时指针的显示位置”复选框。禁用它解决了问题，现在我可以从比例模式切换到全屏和无缝模式。还有迷你菜单:)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|entityMap^0^^$0|@$1|2|3|4|5|6|7|C|8|@]|9|@]|A|$]]]|B|$]]

I came here to find an solution and suddenly had the hunch that something was interfering with the guest window processing host keys. I turned out that I enabled the "Show postion of pointer when the Control key is pressed" checkbox. Disabling it fixed the problem and now I can switch from scale mode to full screen and seamless mode. Also have the mini menu back :)

blocks|key|2226909|text|哇哦..。首先使用“主机”%2B“主页”按钮，然后转到“查看”->“全屏模式”-->现在您处于全屏模式，您必须摆脱全屏模式，您将看到顶部的菜单栏。:)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|entityMap^0^^$0|@$1|2|3|4|5|6|7|C|8|@]|9|@]|A|$]]]|B|$]]

Sooo... First use "Host"+"Home" buttons, next go to "view" --> "Full screen mode" --> now you are in the full screen mode and you have to escape from full screen mode and you will see the top menu bar. :)

How do I display the menu bar of VirtualBox?

Functions like cdrom, usb, etc need access to the menu bars to work.

<a href="https://i.stack.imgur.com/ycYsS.png" rel="noreferrer"><img src="https://i.stack.imgur.com/ycYsS.png" alt="enter image description here"></a>

Why has VirtualBox's menu disappeared?

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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如何显示VirtualBox的菜单栏？像cdrom、usb等功能需要访问菜单栏才能工作。📷

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