首页 > 解决方案 > 为什么键/鼠标侦听器检测到鼠标按下而不是按键?(Java awt 窗口)

问题描述

所以,我的窗口检测到鼠标按下而不是按键。

这里有一些缩短的代码:

public class Frame {
    public static final int MAX_WIDTH = (int) Toolkit.getDefaultToolkit().getScreenSize().getWidth();
    public static final int MAX_HEIGHT = (int) Toolkit.getDefaultToolkit().getScreenSize().getHeight();

    private static final JWindow window = new JWindow();
    private static final DrawMain dm = new DrawMain();
    private static final GIH gih = new GIH();

    public static void init() {
        window.setSize(CVar.clientSizeX, CVar.clientSizeY);
        window.setLocationRelativeTo(null);
        window.setAutoRequestFocus(true);
        window.add(dm);
        window.addMouseListener(mh);
        window.addMouseWheelListener(mh);
        window.addMouseMotionListener(mh);
        window.setVisible(true);
    }

    public static void update() {
            window.remove(dm);
            window.removeMouseListener(mh);
            window.removeMouseMotionListener(mh);
            window.removeMouseWheelListener(mh);
            window.setSize(MAX_WIDTH, MAX_HEIGHT);
            window.setLocationRelativeTo(null);
            window.add(dm);
            window.setAutoRequestFocus(true);
            window.setAlwaysOnTop(true);
            window.addMouseListener(gih);
            window.addMouseWheelListener(gih);
            window.addMouseMotionListener(gih);
            window.addKeyListener(gih);
            window.setVisible(true);
    }
}

public class GIH implements KeyListener, MouseListener, MouseMotionListener, MouseWheelListener {
    @Override
    public void keyReleased(KeyEvent e) {
        System.out.println(e.getKeyChar());
    }

    @Override
    public void mouseClicked(MouseEvent e) {
        switch (e.getButton()) {
            case MouseEvent.BUTTON1 -> {
                System.out.println("Mouse 1 clicked");
            }
            case MouseEvent.BUTTON3 -> {
                System.out.println("Mouse 3 clicked");
            }
        }
    }

无论出于何种原因,如果我点击,我会收到我的鼠标 1 点击消息,但如果我按下一个键,我既不会得到键字符,也不会得到游戏通常在按键时给出的输出。相反,我将相应的字符写入 IntelliJ(我的 IDE)。我尝试了 window 和 dm.requestFocus() 和 window.setAutoRequestFocus(true) 的多种变体,但它们都不起作用。有谁知道为什么?(注意:dm 只是一个带有paintComponent 方法的类)

标签: javaawtkeylistenermouselistenerjwindow

解决方案


尝试将 window.addKeyListener(...) 添加到 init() 方法中。


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