将 JFrame 插入到 Swing 中的选项卡中

2022-01-24 00:00:00 java swing jframe jtabbedpane

我有一个已经给定的 JFrame 框架，我想将它显示(插入)到 JTabbedPane 的 tab 中，但是不可能像那样明确地:

I Have an already given JFrame frame, that I want to show it (insert it) into a tab of JTabbedPane, but that was not possible explicitely like that:

frame = new JFrame();
frame.setBounds(100, 100, 450, 300);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

mainTabs.addTab("Editor", null, frame, null);

错误是:

java.lang.IllegalArgumentException: adding a window to a container

我尝试了一些解决方案，例如将框架插入到 JPanel 中，但也是徒劳的.我有将其转换为 InternalJFrame 的想法，但我对此一无所知.

I tried some solutions like to insert the frame into a JPanel but also in vain. I have the idea to convert it into an InternalJFrame but I don't have any idea about that.

这是插入该 frame 的任何解决方案吗?

Is that any solution to insert that frame?

更新:

我尝试了那个解决方案:

I tried that soluion:

 mainTabs.addTab("Editor", null, frame.getContentPane(), null);

但是我丢失了我添加的 JMenuBar.

But i lost the JMenuBar that I added.

推荐答案

你不能将 JFrame(或另一个顶级组件)添加到另一个组件/容器中，但是你可以使用 getContentPane() 框架的方法，获取框架的主面板并将其添加到 JTabbedPane 选项卡.像下一个:

You can't add JFrame(or another top-level component) to another component/container, but you can use getContentPane() method of frame, to get main panel of your frame and add that to JTabbedPane tab. Like next:

JTabbedPane tabs = new JTabbedPane();
JFrame frame = new JFrame();
frame.add(new JButton("button"));
tabs.addTab("1", frame.getContentPane());

您也可以将 JFrame 更改为 JPanel 并使用它.

Also you can change JFrame to JPanel and use that.

阅读 JInternalFrame, 顶级容器.

getContentPane() 不返回任何装饰或 JMenuBar，您需要手动添加此组件，例如下一个带有菜单的示例:

getContentPane() doesn't return any decorations or JMenuBar, this components you need to add manually, like in next example with menu:

JTabbedPane tabs = new JTabbedPane();

JFrame frame = new JFrame();
JMenuBar bar = new JMenuBar();
bar.add(new JMenu("menu"));
frame.setJMenuBar(bar);
frame.add(new JButton("button"));

JPanel tab1 = new JPanel(new BorderLayout());
tab1.add(frame.getJMenuBar(),BorderLayout.NORTH);
tab1.add(frame.getContentPane());
tabs.addTab("1", tab1);

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