将Java App变为Windows屏幕保护程序 [英] Turn Java App into Windows Screensaver

问题描述

我写了一个用深度优先搜索解决迷宫的程序。我想知道如何将这个Java程序变成Screensaver应用程序？当屏幕保护程序通常被激活时，有没有办法让Windows 7启动我的应用程序？

I wrote a program that solves mazes with depth-first search. I was wondering how to turn this Java program into a Screensaver application? Is there a way that Windows 7 starts my app when the screensaver would normally be activated?

推荐答案

Windows屏幕保护程序只是程序接受某些命令行参数。因此，为了使您的程序可以作为屏幕保护程序运行，您必须对其进行编码以接受这些参数。

A Windows screen saver is just program that accepts certain command line arguments. So in order to have your program be runnable as a screen saver you must code it to accept those arguments.

接下来您可能希望屏幕保护程序以全屏运行模式。这在Java中非常简单，如下例所示：

Next you will probably want your screen saver to run in full screen mode. This is very simple to do in Java as the example below shows:

 public final class ScreenSaver {

     public static final void main(final String[] args) throws Exception {
         UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());

         final JFrame screenSaverFrame = new JFrame();
         screenSaverFrame.setDefaultCloseOperation(
             WindowConstants.EXIT_ON_CLOSE);
         screenSaverFrame.setUndecorated(true);
         screenSaverFrame.setResizable(false);
         screenSaverFrame.add(new JLabel("This is a Java Screensaver!",
                              SwingConstants.CENTER), BorderLayout.CENTER);
         screenSaverFrame.validate();
         GraphicsEnvironment.getLocalGraphicsEnvironment()
                   .getDefaultScreenDevice()
                   .setFullScreenWindow(screenSaverFrame);
    }
}

最后，您需要将Java程序变为使用 Launch4j 之类的Windows可执行文件，并将其 .scr 扩展。

Finally you will need to make your Java program into a Windows executable using something like Launch4j and give it .scr extension.

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