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Java 如何从JPOppMenu访问MouseEvent getX()/getY()?_Java_Swing_Mouseevent_Actionlistener_Jpopupmenu - Fatal编程技术网

Java 如何从JPOppMenu访问MouseEvent getX()/getY()?

Java 如何从JPOppMenu访问MouseEvent getX()/getY()?,java,swing,mouseevent,actionlistener,jpopupmenu,Java,Swing,Mouseevent,Actionlistener,Jpopupmenu,我有一个这样的弹出菜单 final JPopupMenu contextMenu = new JPopupMenu(); final JMenuItem addTask = new JMenuItem("Add Task"); 然后我添加了一个鼠标侦听器: component.addMouseListener(new MouseAdapter() { @Override public void mouseReleased(MouseEvent e)

我有一个这样的弹出菜单

final JPopupMenu contextMenu = new JPopupMenu();
final JMenuItem addTask = new JMenuItem("Add Task");
然后我添加了一个鼠标侦听器:

component.addMouseListener(new MouseAdapter() {
        @Override
        public void mouseReleased(MouseEvent e) 
        {    
            if (e.isPopupTrigger()) {
                contextMenu.show(e.getComponent(), e.getX(), e.getY());
            }
        }
}
在MenuItem的Actionlistener中,我希望从MouseeEvent访问x/y数据。在不将它们保存在额外变量中的情况下,这是可能的吗?我想得到这样的东西:

addTask.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent arg0) {
            //System.out.println(Mouse.getX()+", "+Mouse.getY());
        }

    });

如果您想获取触发弹出菜单的事件的鼠标坐标-不,不保存它是不可能的。如果您想获取鼠标事件,而该鼠标事件触发了菜单项action-yes,则可以:
EventQueue.getCurrentEvent()
将返回事件(您应该检查此事件是否为鼠标事件,如果是,则将其强制转换,因为该操作也可以通过按键事件触发)


“没有将它们保存在一个额外的变量中?”-有那么大的问题吗,一个
点currentPoint
成员?不,这不是问题。我只是想如果没有这个解决方案是可能的。谢谢分享!
public void actionPerformed(ActionEvent arg0) {
  AWTEvent evt = EventQueue.getCurrentEvent();
  if (evt instanceof MouseEvent) {
    MouseEvent me = (MouseEvent) evt;
  }
}