This signal is emitted when a #WebKitUserMessage is received from a
#WebKitWebExtension. You can reply to the message using
webkit_user_message_send_reply().
You can handle the user message asynchronously by calling g_object_ref() on
@message and returning %TRUE.
This signal is emitted when a #WebKitUserMessage is received from a #WebKitWebExtension. You can reply to the message using webkit_user_message_send_reply().
You can handle the user message asynchronously by calling g_object_ref() on @message and returning %TRUE.