convUnreadMessageCountChangedByFilterCallbackParam

Introduction

Callback parameters for changes in the total number of unread messages filtered by the session filter

Parameter introduction

callback

• Parameter type : convUnreadMessageCountChangedByFilterCallback
• Parameter description : Callback for changing the total number of unread messages in a session

userData

• Parameter type : string
• Parameter description : User-defined data, ImSDK is only responsible for sending back to the callback function cb without any processing