背景图像JFrame与内容 [英] Background image JFrame with content

问题描述

我有 JFrame ， BorderLayout ，所有方面都有面板（北，东，...... ）。在面板中主要有标签和按钮。

I have a JFrame with BorderLayout, there are panels on all sides (North, East ,...). In the panels there are labels and buttons mostly.

现在我希望框架有背景图像，一些研究告诉我，我必须更改我的内容窗格帧。

Now I want the frame to have a background image, some research told me that i had to change the content pane of my frame.

但是当我尝试这个时，内容会被放到后台并且不可见。此外，我不知道如果调整框架大小，如何调整图像大小。

When I try this however, the content gets put in the background and isn't visible. Also, I don't know how to resize the image if the frame is resized.

是否有一个简单的解决方案或我将不得不重做我的大部分代码？

Is there an easy fix for this or will I have to rework most of my code?

推荐答案

1. put JPanel （或 JComponent ）背景图像到 BorderLayout.CENTER ，然后这个 JPanel 填写整个 JFrame 区域，其余的 JComponents 放到此 JPanel

1. put JPanel (or JComponent) with background Image to the BorderLayout.CENTER, then this JPanel fills whole JFrame area, rest of yout JComponents put to this JPanel

所有方面都有Jpanel（北，东，......）。在Jpanels中主要有Jlabels和Jbuttons。

这些 JComponents 涵盖所有可用的 Rectangle for JFrame ，然后背景图片（来自我的第1个永远不会被显示出来，因为这些 JComponents 是on_top JFrame 并且可以隐藏此图片，

these JComponents covered all available Rectangle for JFrame, then Background Image (from my 1st point) never will be dispalyed, because these JComponents are on_top JFrame and could be hide this Image as well,

添加带有背景图片的JPanel （来自我的第1点），然后用 JPanel #setOpaque（false）; ，然后这个<另外 JPanel（s） code> JPanel 将是透明的，通知 JPanel 默认情况下已实现 FlowLayout

add JPanel with Background Image (from my 1st point), then put there another JPanel(s) with JPanel#setOpaque(false);, then this JPanel will be transparent, notice JPanel has implemented by default FlowLayout

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