BotFramework V4:如何从机器人发送事件并在react WebChat中捕获它？

// 机器人代码
async function handleMessage(context) {
  // 发送事件
  await context.sendActivity({
    type: 'event',
    name: 'customEvent',
    value: { data: 'eventData' }
  });
}

// React WebChat代码
import React, { useEffect } from 'react';
import { createDirectLine, createStore } from 'botframework-webchat';

function ChatComponent() {
  useEffect(() => {
    // 创建DirectLine实例
    const directLine = createDirectLine({ token: 'YOUR_DIRECTLINE_TOKEN' });

    // 订阅事件
    directLine.activity$.subscribe(activity => {
      if (activity.type === 'event' && activity.name === 'customEvent') {
        // 处理事件
        console.log('捕获到自定义事件:', activity.value);
      }
    });

    // 渲染WebChat组件
    const store = createStore();
    window.WebChat.renderWebChat(
      {
        directLine: directLine,
        store
      },
      document.getElementById('webchat')
    );
  }, []);

  return <div id="webchat" />;
}

export default ChatComponent;