# Tencent RTC Chat — Windows > Chat documentation for Windows platform. ## Core SDK ### Getting Started - [Activate the Service](https://pre.trtc.io/document/74511.md): Tencent Cloud Chat service is an instant messaging SDK that enables developers to integrate messaging and group management features. This guide helps users activate the free plan, retrieve UserSig for authentication, purchase official editions, renew subscriptions, upgrade plans, and enable automatic renewal. It provides step-by-step instructions to quickly start using Chat and manage your application versions effectively. - [Install Chat SDK](https://pre.trtc.io/document/34310.md): The Chat SDK for Windows is a software development kit designed to enable chat functionalities in Windows applications using Visual Studio. This guide walks developers through environment requirements, SDK download, project creation, file integration, project configuration adjustments, and verifying the SDK version. It supports both 32-bit and 64-bit builds and ensures proper setup for compiling and running chat features efficiently. - [Initialize Chat SDK](https://pre.trtc.io/document/47968.md): The Tencent RTC SDK for Android, iOS, Windows, and Mac requires initialization before use. This guide explains how to prepare an SDKAppID, configure the V2TIMSDKConfig object including log levels and listeners, add SDK event listeners, and call the initialization API. It covers log storage locations and decompression methods for different platforms, enabling developers to properly set up the SDK for real-time communication features. - [Login and Logout](https://pre.trtc.io/document/47971.md): Tencent Cloud Chat SDK provides login APIs for Android, iOS, Windows, and Mac platforms to authenticate users and enable messaging and conversation features. This guide explains the login process, key parameters like UserID and UserSig, handling ticket expiration, multi-client login scenarios, and logout operations. Sample code snippets in Java, Swift, Objective-C, and C++ demonstrate how to implement login functionality effectively. ### Users - [User Profile](https://pre.trtc.io/document/48162.md): Tencent RTC provides SDK APIs for Android, iOS, Windows, and Mac that allow users to query and modify their own profiles, as well as profiles of friends and non-friends. The SDK supports adding and removing relationship event listeners to receive real-time notifications about friendship changes. These APIs enable developers to manage user nicknames, profile photos, statuses, and friend remarks efficiently across multiple platforms. - [User Online Status](https://pre.trtc.io/document/49562.md): The Tencent RTC SDK version 6.3 and later introduces user status management capabilities, allowing applications to display and manage both general and custom user statuses. This feature targets developers integrating real-time communication in their apps to reflect users' online presence and personalized status messages. It supports multiple platforms including Android, iOS, Windows, and Mac, and provides APIs to set, query, and receive notifications about user status changes, enhancing user interaction and presence awareness. - [Friend Management](https://pre.trtc.io/document/48159.md): The Chat SDK is a cross-platform API suite that enables friend management features such as retrieving friend lists, adding and deleting friends, checking relationships, modifying friend profiles, and setting messaging permissions to friends only. It supports Android, iOS, Windows, and Mac platforms, providing developers with comprehensive methods and sample code in Java, Swift, Objective-C, and C++ to integrate social interactions into their applications. - [Friend List](https://pre.trtc.io/document/48156.md): Tencent RTC provides SDK APIs for managing friend groups on Android, iOS, Windows, and Mac platforms. These APIs enable developers to create, delete, rename, and retrieve friend groups, as well as add or remove friends from groups and receive notifications on group changes. The document includes sample code in Java, Swift, Objective-C, and C++ to facilitate integration and implementation of friend group management features. - [Block Lists](https://pre.trtc.io/document/48153.md): Tencent Cloud Chat SDK provides blocklist features for Android, iOS, Windows, and Mac platforms to block and unblock users effectively. This guide explains how to add users to the blocklist, listen for blocklist changes, and configure friendship behavior after blocking. It also details handling error codes when blocked users attempt to send messages, with sample code in Java, Swift, Objective-C, and C++. - [Follow](https://pre.trtc.io/document/61230.md): Tencent RTC's following feature SDK enables users on Android, iOS, Windows, and Mac platforms to follow and unfollow other users, facilitating timely receipt of updates and personalized content recommendations. This API documentation details the followUser and unfollowUser methods, including usage limits such as following up to 20 users simultaneously and a maximum of 5000 followers per user. It supports Pro, Pro-plus, and Enterprise Editions from SDK version 7.8 onwards. ### Group Channels - [Overview](https://pre.trtc.io/document/48169.md): The Chat SDK offers various group types including work groups, public groups, meeting groups, communities, and audio-video groups to support diverse chat scenarios. This overview explains the capabilities and limits of each group type, such as member roles, join approvals, and message history management. It also highlights the requirements for using community groups and configuration options for enabling message history retrieval. The Chat SDK is designed for developers to implement flexible and scalable group communication features. - [Group Channel Settings](https://pre.trtc.io/document/48466.md): Tencent RTC SDK provides a comprehensive group management API that enables developers to create, join, leave, and disband groups. The Group Event Listener API supports event callbacks for group member changes, lifecycle events, join requests, and custom system notifications across Java, Swift, Objective-C, and C++ platforms. This API helps developers efficiently handle real-time group events and maintain group state synchronization. - [Group Channel Profile](https://pre.trtc.io/document/48185.md): The group profile management SDK for Android, iOS, Windows, and Mac platforms enables developers to retrieve and modify group information such as group ID, type, custom fields, and member count. This guide covers key steps including fetching group profiles with getGroupsInfo, updating profiles using setGroupInfo, and understanding role-based permissions for modifications. It also explains how to handle callbacks for group info changes to keep members informed. - [Member Management (Mute & Ban)](https://pre.trtc.io/document/48181.md): The getGroupMemberList API is part of the group member management SDK that supports Android, iOS, Windows, and Mac platforms. It enables developers to retrieve detailed member lists including user profiles, roles, and online status. This API supports pagination with the nextSeq parameter and filtering by member roles, facilitating efficient management of large groups such as AVChatRooms. It is designed for developers implementing group member operations like muting, removing, and permission granting within Tencent RTC. - [Member Profile](https://pre.trtc.io/document/48178.md): Tencent RTC provides APIs for managing group member profiles across Android, iOS, Windows, and Mac platforms. The V2TIMGroupMemberFullInfo class encapsulates userID, custom info, role, and muting status. Developers can retrieve multiple group member profiles efficiently using getGroupMembersInfo and update member details such as name cards and custom fields with setGroupMemberInfo. This guide covers key steps for obtaining and modifying group member information, including necessary pre-configuration for custom fields. - [Group Channel Attributes](https://pre.trtc.io/document/48175.md): The Group Custom Attributes API provides SDKs for Android, iOS, Windows, and Mac to manage custom key-value pairs for groups. It enables developers to initialize, set, delete, get, and update group attributes to support scenarios like voice chat room seat management, group activity organization, and group tagging. This API supports multiple group types including AVChatRoom, Public, Meeting, and Work groups, facilitating flexible group data management across Tencent RTC platforms. - [Group Channel Counter](https://pre.trtc.io/document/53431.md): The Group Counters API in Tencent RTC SDK allows developers to manage integer data storage at the group level across Android, iOS, Windows, and Mac platforms. It supports Pro, Pro Plus, and Enterprise editions starting from Enhanced SDK version 7.0. Key functionalities include setting, increasing, and decreasing group counters with real-time notifications via callbacks, enabling features such as cumulative viewer counts and total gifts in audio-video groups. ### Community Channels - [Manage Community](https://pre.trtc.io/document/48172.md): Tencent RTC Chat SDK provides community group and topic management capabilities across Android, iOS, Windows, and macOS. It enables developers to create large community groups with multiple topics to facilitate member interactions and message exchanges within topics. This feature supports managing community members and topics via dedicated APIs in V2TIMGroupManager and V2TIMMessageManager classes. Usage requires enabling the community feature in Tencent Cloud Console and appropriate edition licensing. - [Permission Group](https://pre.trtc.io/document/59829.md): Permission groups in Tencent RTC enable flexible management of community and topic permissions by allowing users to configure distinct permissions and members for different groups. Supported on Android, iOS, Windows, and Flutter platforms from version 7.8 onward, this feature is designed for communities with many members and topics. It requires Pro, Pro Plus, or Enterprise editions and activation via the Console. Permission groups use 64-bit values to represent enabled or disabled permissions, complementing default permissions that apply to all members. This overview explains the core concepts and management rules for permission groups to help users implement differentiated permission control effectively. ### Messages - [Overview](https://pre.trtc.io/document/47989.md): The V2TIMMessage class in the Chat SDK provides a comprehensive message structure for sending and receiving messages across Android, iOS, Windows, and Mac platforms. It defines key attributes such as message ID, timestamp, sender information, message status, and supports various message types including text, image, audio, video, and custom messages. This API reference details the properties and usage of V2TIMMessage for developers integrating chat functionalities. - [Send a Message](https://pre.trtc.io/document/47994.md): The sendMessage API in Tencent RTC SDK enables sending one-to-one and group messages across Android, iOS, Windows, and Mac platforms. It supports text, custom, and rich media messages with configurable options such as message priority, offline push notifications, and online user filtering. This reference details the API methods, parameters, and usage examples in Java, Swift, Objective-C, and C++ to facilitate integration of messaging features. - [Receive a Message](https://pre.trtc.io/document/47995.md): Tencent IM SDK provides the addSimpleMsgListener and addAdvancedMsgListener APIs for Android, iOS, Windows, and Mac platforms. These APIs enable developers to listen for and receive various message types including text, custom, and rich media messages. The simple message listener supports text and custom messages, while the advanced listener supports all message types. This reference details the listener setup, callback methods, and usage examples in multiple programming languages to facilitate timely and comprehensive message handling. - [Message History](https://pre.trtc.io/document/47998.md): The historical message pulling API in V2TIMManager and V2TIMMessageManager SDKs enables developers on Android, iOS, Windows, and Mac to retrieve one-to-one and group chat messages. It supports advanced retrieval methods including paging, time range, and message sequence, handling both local and cloud-stored messages with edition-based storage limits. This API ensures reliable access to chat history even during network issues by falling back to local data. - [Forward Messages](https://pre.trtc.io/document/48001.md): Tencent RTC provides SDKs for Android, iOS, Windows, and Mac that enable developers to combine multiple messages into a single merged message and forward it. This guide explains how to create a combined message with a title and digest list, send it to a receiver, and handle compatibility with earlier SDK versions by providing fallback text. Key steps include using the createMergerMessage API to package original messages and display combined message details. - [Edit Message](https://pre.trtc.io/document/48006.md): The modifyMessage API in Tencent RTC Enhanced edition (v6.2+) enables participants on Android, iOS, Windows, and Mac platforms to modify sent messages within a conversation. It supports updating cloudCustomData and various message elements such as text, custom, location, and face elements. This API ensures that changes are synchronized across all conversation participants, facilitating features like message reply and quote. - [Insert a Message](https://pre.trtc.io/document/48008.md): The local message insertion API of Tencent RTC enables developers to insert messages such as tips or notifications directly into the local database for one-to-one and group chats on Android, iOS, Windows, and Mac. This API does not send messages to the server, ensuring messages like "You have left the group" are displayed locally without being shared. It is designed for scenarios requiring local-only message display, with usage demonstrated in Java, Swift, Objective-C, and C++. - [Delete Messages](https://pre.trtc.io/document/48011.md): Tencent RTC Messaging SDK provides APIs to delete both local and cloud messages on Android, iOS, Windows, and Mac platforms. This guide explains how to use deleteMessageFromLocalStorage to remove local messages and deleteMessages to permanently delete messages from the cloud and local storage. It includes platform-specific sample code and important notes on message recovery, deletion limits, and effects on conversation sorting. - [Clear History Messages](https://pre.trtc.io/document/48013.md): Tencent Cloud Messaging SDK provides APIs to clear one-to-one and group message histories on Android, iOS, Windows, and Mac platforms. These APIs remove all messages in a conversation both locally and from the cloud without deleting the conversation itself. Supported from SDK version v5.4.666 onwards, the clearing operation affects conversation list sorting depending on SDK version and sorting method. This documentation includes usage instructions and sample code for Java, Swift, Objective-C, and C++ to help developers integrate message clearing functionality. - [Recall a Message](https://pre.trtc.io/document/48016.md): Tencent RTC message recall SDK enables senders on Android, iOS, Windows, and Mac platforms to revoke messages within a configurable time frame. This guide explains how senders can recall messages and how receivers can detect and handle message recall notifications using APIs in Java, Swift, Objective-C, and C++. It covers message recall in both one-to-one and group chats, including permissions for group administrators and owners. - [Online Message](https://pre.trtc.io/document/48019.md): Tencent RTC Messaging SDK guides developers on sending online-only messages that are not stored offline or across devices. This quickstart covers how to implement a typing indicator in one-to-one chats on Android, iOS, Windows, and Mac by sending custom online messages with the onlineUserOnly flag set to true. The guide includes sample code snippets for Java, Swift, Objective-C, and C++ to help developers display "Typing..." status in real time. - [Read Receipt](https://pre.trtc.io/document/48022.md): The Read Receipt feature in Tencent RTC SDKs for Android, iOS, Windows, and Mac notifies message senders when recipients have read their messages. It supports group messages with configuration limits and one-to-one messages by default. This API documentation explains how to enable read receipts, send messages requesting receipts, report reads, listen for notifications, and retrieve read details. The feature requires Pro, Pro Plus, or Enterprise editions and supports groups up to 200 members. - [Query Messages](https://pre.trtc.io/document/48025.md): The findMessages API is a local message querying SDK provided by Tencent RTC for Android, iOS, Windows, and Mac platforms. It enables developers to retrieve detailed information of local messages by messageID, including revoked and deleted messages. This API is designed for scenarios where message lists store only messageIDs in memory and detailed content is fetched on demand, optimizing memory usage. It supports querying received and historical messages but excludes audio-video group messages which are not saved locally. - [Mentions (@)](https://pre.trtc.io/document/48027.md): This guide explains how to implement group @ message functionality on Android, iOS, Windows, and Mac platforms using Tencent RTC SDK. It covers detecting the '@' character in the chat input box, selecting target group members, creating a group @ message with specified members, and sending the message. Sample code in Java, Swift, Objective-C, and C++ demonstrates the key steps to enable group mentions in chat applications. - [Targeted Message](https://pre.trtc.io/document/48029.md): The Tencent RTC targeted group message SDK allows sending messages to specified members within a group, excluding others from receiving them. This feature supports Android, iOS, Windows, and Mac platforms and requires the Enhanced edition SDK v6.0.1975 or later with Pro, Pro Plus, or Enterprise licenses. The guide covers creating original messages, specifying recipients, and sending targeted group messages with sample code in multiple programming languages. - [Do Not Disturb](https://pre.trtc.io/document/48032.md): The Tencent RTC SDK provides message receiving options for one-to-one chat, group chat, and all messages to implement Do Not Disturb features. This guide covers how to configure these options on Android, iOS, Windows, and Mac platforms, including setting message receiving preferences using the setC2CReceiveMessageOpt API. It supports different modes such as receiving messages normally, receiving without notifications, or blocking messages entirely, enabling developers to customize user message alerts effectively. - [Message Extension](https://pre.trtc.io/document/50865.md): The Message Extension SDK enables developers on Android, iOS, Windows, and Mac platforms to configure custom keys and values for messages, supporting scenarios like polling, group notices, and surveys. This guide explains how to enable the feature in the Tencent RTC Console and use the setMessageExtensions API to add or modify message extensions, including important usage constraints and concurrency considerations. - [Reactions](https://pre.trtc.io/document/56572.md): The message reaction feature in Tencent RTC SDK enables users on Android, iOS, Windows, and Mac platforms to add, remove, and retrieve emoji reactions on messages. Available to Pro, Pro Plus, and Enterprise edition customers using Enhanced SDK v7.4 or later, this API supports interactive emoji responses with user counts and profiles, providing methods such as addMessageReaction, removeMessageReaction, getMessageReactions, and getAllUserListOfMessageReaction, along with notifications for reaction changes. - [Message Translation](https://pre.trtc.io/document/53434.md): The message translation API enables text message translation for Android, iOS, Windows, and Mac platforms. It supports manual translation calls for multiple UTF-8 encoded text messages, with automatic source language detection and multiple target languages. Available to Pro, Pro Plus, and Enterprise edition customers using SDK enhanced edition v7.0 or later, this API facilitates seamless integration of text translation capabilities in messaging applications. - [Pin Messages](https://pre.trtc.io/document/60171.md): Tencent Cloud Chat SDK provides the PinGroupMessage and GetPinnedGroupMessageList APIs to manage pinned messages in group chats. These APIs allow developers to pin important messages at the top of the chat list and retrieve pinned message lists, helping users quickly access frequently referenced content. The message pinning feature is supported in enhanced edition 7.9 and later, exclusively for premium edition customers, and currently applies only to ordinary groups. The PinGroupMessage API enables pinning or unpinning messages with detailed control, while the GetPinnedGroupMessageList API fetches pinned messages along with pinner information when available. ### Conversations - [Overview](https://pre.trtc.io/document/48329.md): The Chat SDK provides conversation management capabilities for Android, iOS, Windows, and Mac platforms. It enables developers to handle one-to-one and group chat conversations, including displaying and updating conversation lists, managing unread message counts, pinning conversations, setting drafts, and customizing conversation data. The SDK supports storing up to 100 conversations in the cloud with options to increase this limit via Pro and Enterprise editions, while local storage has no limit but may differ from cloud data. - [Conversation List](https://pre.trtc.io/document/48326.md): The conversation list feature SDK for Android, iOS, Windows, and Mac enables applications to retrieve and manage recent conversations after user login. It supports one-time and paged pulling of conversations, automatic synchronization of updates, and sorting by orderKey or last message timestamp. This guide provides step-by-step instructions to implement conversation list retrieval, update handling, and listener management across multiple platforms. - [Get Conversations](https://pre.trtc.io/document/48323.md): Tencent Cloud Conversation SDK offers APIs for Android, iOS, Windows, and Mac platforms to retrieve detailed information of specified conversations. These APIs allow developers to obtain V2TIMConversation objects for one or multiple conversations by their IDs, facilitating efficient conversation management in real-time communication applications. - [Unread Count](https://pre.trtc.io/document/48320.md): The Chat SDK provides the getTotalUnreadMessageCount API to retrieve the total unread message count across all conversations on Android, iOS, Windows, and Mac platforms. This API is designed for developers to efficiently display unread message indicators in chat applications, supporting work groups, public groups, and communities. It also includes callback notifications for real-time updates when unread counts change, enhancing user engagement and communication efficiency. - [Pin Conversations](https://pre.trtc.io/document/48317.md): The PinConversation API in Tencent RTC Enhanced edition SDK (v5.3.425+) allows developers to pin one-to-one or group conversations to the top of the conversation list on Android, iOS, Windows, and Mac platforms. This API helps users quickly access important conversations by fixing them above others, with the pinned status synchronized across devices. The maximum limit is 50 pinned conversations. The API provides methods to pin or unpin conversations and retrieve the conversation list with pinned conversations prioritized and sorted by activation order. - [Delete Conversations](https://pre.trtc.io/document/48314.md): Tencent Cloud Chat SDK provides the deleteConversation API for Android, iOS, Windows, and Mac platforms to delete one-to-one or group conversations. This API allows users to permanently remove conversations and their historical messages from both client and server, with multi-client synchronization supported from SDK version 5.1.1 onwards. The SDK version 7.1 or later enables batch deletion of up to 100 conversations with options to retain or delete message history. This documentation details the usage and parameters of the deleteConversation API across multiple platforms. - [Conversation Draft](https://pre.trtc.io/document/48311.md): The setConversationDraft API enables saving and restoring unfinished message drafts locally on Android, iOS, Windows, and Mac platforms. This SDK feature helps users preserve draft text when switching between chat windows, improving messaging continuity. The guide includes key steps and sample code in Java, Swift, Objective-C, and C++ to set or clear conversation drafts within Tencent RTC. - [Conversation Mark](https://pre.trtc.io/document/48853.md): The MarkConversation API in Tencent RTC SDK enables developers to mark or unmark conversations as favorite, unread, collapsed, or hidden across Android, iOS, Windows, and Mac platforms. This API supports batch marking of up to 100 conversations simultaneously and requires the Pro, Pro Plus, or Enterprise edition with SDK enhanced edition v6.5.2803 or later. It allows customization of extended marks while preserving the underlying conversation logic. - [Conversation Group](https://pre.trtc.io/document/48854.md): Tencent RTC conversation group management APIs enable developers to create, delete, rename, and manage conversation groups within their applications on Android, iOS, Windows, and Mac platforms. Available from SDK enhanced edition v6.5.2803 and requiring Pro or Enterprise editions, these APIs support grouping conversations for better organization and provide notifications on group changes. Supported languages include Java, Swift, Objective-C, and C++. ### Search - [Search Messages](https://pre.trtc.io/document/48134.md): The local message search feature in Tencent RTC Chat SDK allows developers to efficiently find messages within conversations using the V2TIMMessageSearchParam and V2TIMMessageSearchResult classes. This API supports keyword-based search, filtering by sender, message type, conversation scope, time range, and paginated results. It is available in Enhanced SDK v5.4.666 or later and applicable to Pro, Pro Plus, and Enterprise editions, enabling improved user experience by quickly locating relevant messages. - [Search Friends](https://pre.trtc.io/document/48137.md): The local user profile search feature in Tencent RTC Enhanced SDK v5.4.666 and later allows searching only locally stored users such as contacts or pulled profiles on Android, iOS, Windows, and Mac platforms. Available in IM Pro, Pro Plus, and Enterprise editions, this guide explains how to use the searchFriends API to search user profiles by userID, nickname, and remark fields with sample code snippets for Java, Swift, Objective-C, and C++. - [Search Channels](https://pre.trtc.io/document/48138.md): Tencent IM SDK provides a local group search feature for Android, iOS, Windows, and Mac platforms, allowing users to search only locally stored groups such as joined groups and pulled group profiles. This feature requires Enhanced SDK version 5.4.666 or later and is available exclusively on the IM Pro, Pro Plus, and Enterprise editions. This quickstart guide covers how to use the searchGroups API with sample code in Java, Swift, Objective-C, and C++ to set search keywords and specify search scopes for groupID and groupName fields. - [Search Channel Members](https://pre.trtc.io/document/48140.md): The local group member search feature in Tencent RTC Enhanced SDK (v5.4.666 or later) allows searching for group members stored locally on Android, iOS, Windows, and Mac platforms. Available on IM Pro, Pro Plus, and Enterprise editions, it enables developers to search group members by user ID, nickname, remark, or name card within specified groups or across all groups. This guide provides step-by-step instructions to integrate and use the searchGroupMembers API for efficient local group member retrieval. - [Cloud Search Messages](https://pre.trtc.io/document/67834.md): Cloud message search is a powerful SDK feature available on Android, iOS, Windows, and Mac platforms that enables users to quickly find desired content within complex messaging data. Designed for Pro Plus and Enterprise customers, it supports keyword-based, sender-specific, message type, and session-based searches with flexible time and pagination controls. This feature improves app user experience and operational efficiency by facilitating precise and fast message retrieval. - [Cloud Search Users](https://pre.trtc.io/document/67835.md): The Search Cloud Users API in Tencent RTC SDK allows developers to find user profiles by user ID, nickname, gender, and other parameters across Android, iOS, Windows, and Mac platforms. This API supports flexible keyword matching with OR/AND logic, pagination via search cursors, and returns detailed user information including friend status. It is designed for scenarios such as adding friends or following users in social applications. The feature requires SDK version 8.4 or later and service activation for advanced capabilities. - [Cloud Search Channels](https://pre.trtc.io/document/67836.md): The searchCloudGroups API in Tencent RTC allows developers to search for cloud groups by group ID, group name, or keywords across Android, iOS, Windows, and Mac platforms. It supports keyword matching with AND/OR logic, pagination via search cursors, and returns detailed group search results including total count and group lists. This API is essential for applications requiring efficient cloud group discovery and management. - [Cloud Search Channel Members](https://pre.trtc.io/document/67837.md): The searchCloudGroupMembers API provides a method to search cloud group members by memberID, nickname, and nameCard across Android, iOS, Windows, and Mac platforms. It supports keyword matching with OR/AND logic, group-specific or global searches, and paginated results. This API is designed for developers needing efficient member lookup in large groups and requires Tencent RTC version 8.4 or later, available to Pro Plus and Enterprise customers. ### Official Channel - [Official Channel](https://pre.trtc.io/document/69506.md): The official channel feature in Tencent RTC IMSDK allows users on Android, iOS, Windows, and Mac platforms to subscribe to broadcast messages and engage in one-on-one chats. This guide covers subscribing to official channels, receiving notifications on profile updates or deletions, and managing official channel lists using the subscribeOfficialAccount API method. Supported on the Enhanced edition from version v7.6.5011 onwards, it enables real-time interaction with official channels through detailed profile attributes and callback notifications. ### Extended Features - [Cloud Search](https://pre.trtc.io/document/60066.md): Cloud message search is a critical SDK feature available on Android, iOS, Windows, and Mac platforms that enables users to quickly locate desired messages across complex conversations. Designed for Pro Plus and Enterprise customers, it supports keyword-based, sender-specific, and session-specific searches with flexible time and pagination controls. This feature improves user experience and operational efficiency by providing precise and efficient content retrieval within Tencent RTC applications. ### Client APIs - [C++](https://pre.trtc.io/document/44350.md): Tencent Cloud Chat C++ SDK offers a comprehensive set of APIs for developers to integrate instant messaging and signaling capabilities into their applications. This API reference covers initialization, login, simple and advanced messaging, signaling, group management, and user profile operations. It enables sending and receiving text, custom, and rich media messages, managing invitations, and handling message history and notification preferences on the C++ platform. - [C](https://pre.trtc.io/document/60011.md): Tencent Cloud Chat C APIs provide a comprehensive set of functions for instant messaging SDK initialization, user login/logout, message sending and management, conversation handling, group and community topic operations, user profile and status management, friend and official account features, offline push, signaling, and event callbacks. These APIs enable developers to integrate Tencent Cloud Chat services into applications efficiently, supporting both synchronous API calls and asynchronous event handling. ### Changelog - [Changelog](https://pre.trtc.io/document/34282.md): The Native Enhanced Version SDK is a comprehensive real-time communication SDK providing streaming messages, text-to-speech, media upload/download, and push notification support across iOS, Android, Mac, HarmonyOS, and Unity platforms. This document details version updates, new features, bug fixes, and stability improvements to help developers stay informed about the latest enhancements and compatibility fixes.