问题描述
因此,我的窗口检测到鼠标按下但检测不到按键。
下面是一些缩短的代码:
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");
}
}
}
无论出于什么原因,如果我单击,都会收到“鼠标1单击”消息,但是如果我按下某个键,则不会显示键字符,也不会显示游戏通常会在按下该键时显示的输出。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。有人知道为什么吗? (注意:dm只是一个带有paintComponent方法的类)
解决方法
尝试将window.addKeyListener(...)添加到init()方法中。