透明，点击，始终在顶部JFrame [英] Transparent, click-through, always on top JFrame

问题描述

所以我目前有一个透明的JFrame，你可以点击，但我需要它保持在所有其他窗口之上。

So I currently have a transparent JFrame that you can click through, but I need it to stay on top of all other windows.

假设你有一个浏览器打开，我希望JFrame能够保持最佳状态，但能够捕捉击键和鼠标点击。

Let's say you have a browser open, I want the JFrame to stay on top of it but be able to catch the keystrokes and mouse clicks.

这是我当前的代码。

public class TransparentWindow extends JFrame {

private static URL URI;

public TransparentWindow() {
    initComponents();
}

@SuppressWarnings("unchecked")
private void initComponents() {
    setExtendedState(Frame.MAXIMIZED_BOTH);
    setIconImage(Toolkit.getDefaultToolkit().getImage(URI));
    setResizable(false);
    setUndecorated(true);
    setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE);
    setAlwaysOnTop(true);
    System.setProperty("sun.java2d.noddraw", "true");
    WindowUtils.setWindowTransparent(this, true);
    WindowUtils.setWindowAlpha(this, 0.6f);

    addKeyListener(new KeyListener() {

        @Override
        public void keyPressed(KeyEvent e) {
        }

        @Override
        public void keyReleased(KeyEvent e) {
        }

        @Override
        public void keyTyped(KeyEvent e) {
        }
    });
}

public static void main(String[] args) {
    try {
        URI = new URL("http://i.imgur.com/xtZK0.png");
    } catch (MalformedURLException e) {
        e.printStackTrace();
    }
    new TransparentWindow().setVisible(true);
}
}

推荐答案

你可能需要做一个超过jframe的java进程，

jframe在没有聚焦的时候无法捕捉到键击，你做这类事情的唯一方法就是把焦点放在你的jframe上每当你丢失它，意味着不可能使用任何其他窗户打开。
您可能需要更改语言。

you probably need to do a java process more than a jframe,
jframe can't catch key stroke when not focus, the only way for you to do such a things is to give the focus to you're jframe every time you lost it, meaniing no possible use of any other windows open. You probably need to change langage.

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