调整JFrame内的JPanel大小 [英] Resizing a JPanel inside a JFrame

问题描述

我是Java新手，开始学习摇摆，并且在JFrame中调整JPanel的大小有问题。我正在学习本教程：

I am new to Java, started learning swing and have a problem with resizing a JPanel inside a JFrame. I am following this tutorial:

http://vincentramdhanie.blogspot.com/2009/11/cardlayout-with-netbeans.html

因为我最终每个人都在学习不同的布局，现在来到CardLayout。在上文中，有一个JPanel用于状态面板。这也是我想要做的，但是当我将JPanel拖到我的空白JForm上时，它占用了所有空间，我没有看到任何调整大小的句柄，就像我使用.NET面板一样。在属性窗口中更改preferredSize也不会执行任何操作。我在这里想念的是什么？我觉得这是一个完整的菜鸟问这样一个基本的问题，但我真的找不到任何方法来调整这个东西......： - |

because ultimately I am learning each of the different layouts and have come to the CardLayout now. In the above, there is a JPanel being used for a status panel. That is what I want to do as well, but when I drag a JPanel onto my blank JForm it takes up all the space and I don't see any resizing handles for it like I would if I were using a .NET panel. Changing preferredSize in the properties window also does nothing. What am I missing here? I feel like a complete noob for asking such a basic question but I really can't find any way to resize this thing.. :-|

编辑：

我忘了提及;我正在使用NetBeans IDE

I forgot to mention; I am using NetBeans IDE

推荐答案

您无法调整 JComponent 的大小因为你选择 CardLayout 。 CardLayout 可以保存/管理共享相同显示空间的一个或多个组件。

You can't resize the JComponent because you've select CardLayout. The CardLayout can holds/manages one or more components that share the same display space.

您需要阅读的内容文档和良好的教程。

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