将鼠标事件传递给Java UI中的应用程序

本文介绍了将鼠标事件传递给Java UI中的应用程序的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我的问题与如何将鼠标事件传递给C＃/ Vista中的我的应用程序？，但是我需要一个透明的Java UI。我可以使用6.0轻松创建一个透明的Java UI，但无法获取有关将应用程序传递给任何应用程序（比如浏览器）的信息。

The question I have is exactly same in requirement as How to pass mouse events to applications behind mine in C#/Vista? , but I need the same for a Transparent Java UI. I can easily create a transparent Java UI using 6.0 but couldn't get any info about passing events through the app to any applications(say a browser) behind.

推荐答案

我相信这会回答你的问题。要运行它，您将需要Java 6更新10及更高版本。 我在Windows Vista上测试了

I believe this will answer your question. To run it you will need Java 6 update 10 and above. I tested it on Windows Vista

import java.awt.AlphaComposite; import java.awt.Color; import java.awt.Component; import java.awt.Dimension; import java.awt.Graphics; import java.awt.Graphics2D; import javax.swing.JFrame; import javax.swing.JPanel; public class ClickThrough { public static void main(String[] args) { JFrame.setDefaultLookAndFeelDecorated(true); JFrame f = new JFrame("Test"); f.setAlwaysOnTop(true); Component c = new JPanel() { @Override public void paintComponent(Graphics g) { Graphics2D g2 = (Graphics2D)g.create(); g2.setColor(Color.gray); int w = getWidth(); int h = getHeight(); g2.fillRect(0, 0, w,h); g2.setComposite(AlphaComposite.Clear); g2.fillRect(w/4, h/4, w-2*(w/4), h-2*(h/4)); } }; c.setPreferredSize(new Dimension(300, 300)); f.getContentPane().add(c); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.pack(); f.setVisible(true); com.sun.awt.AWTUtilities.setWindowOpaque(f,false); } }

请注意，您需要一个未装饰的窗口或由Java单独装饰的窗口（而不是默认的OS装饰），否则代码将不起作用。

Note that you need to either have an undecorated window or one that is decorated by Java alone (not the default OS decoration) otherwise the code won't work.