Java中的自定义JMenuItems [英] Custom JMenuItems in Java

问题描述

是否可以创建包含按钮的自定义 JMenuItem ？例如，是否可以使用与此类似的项创建 JMenuITem ：

Would it be possible to create a custom JMenuItem that contains buttons? For example would it be possible to create a JMenuITem with an item similar to this:

+----------------------------------------+
| JMenuItem [ Button | Button | Button ] |
+----------------------------------------+

推荐答案

我怀疑有一种简单的方法可以做到这一点。您可以执行以下操作：

I doubt there is an easy way to do this. You can do something like:

JMenuItem item = new JMenuItem("Edit                       ");
item.setLayout( new FlowLayout(FlowLayout.RIGHT, 5, 0) );
JButton copy = new JButton("Copy");
copy.setMargin(new Insets(0, 2, 0, 2) );
item.add( copy );
menu.add( item );

但有几个问题：

a）单击按钮时菜单不会关闭。所以代码需要添加到你的ActionListener

a) the menu doesn't close when you click on the button. So that code would need to be added to your ActionListener

b）菜单项不响应左/右箭头等关键事件，所以没办法使用键盘将焦点放在按钮上。这将涉及菜单项的UI更改，我不知道从哪里开始。

b) the menu item doesn't respond to key events like the left/right arrow, so there is no way to place focus on the button using the keyboard. This would involve UI changes to the menu item and I have no idea where to start for this.

我只是使用标准UI设计创建子菜单。

I would just use the standard UI design an create sub menus.

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