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on_window_message

Decorator to react to messages coming from the Web App’s parent window. The decorated function is called every time a new window message is received.

Parameters

message

str

The message coming from the Web App’s parent window.

import chainlit as cl

@cl.on_window_message
def main(message: str):
  # do something

Function to send messages to the Web App’s parent window.

message

str

The message to send to the Web App’s parent window.

@cl.on_message
async def message():
  await cl.send_window_message("Server: Hello from Chainlit")