tencent cloud

// `selectedMessage` is the message to be recalled.
[[V2TIMManager sharedInstance] revokeMessage:selectedMessage
                                        succ:^{
    // Message recalled successfully
} fail:^(int code, NSString *msg) {
    // The message failed to be recalled
}];

class Callback final : public V2TIMCallback {
public:
    using SuccessCallback = std::function<void()>;
    using ErrorCallback = std::function<void(int, const V2TIMString&)>;

    Callback() = default;
    ~Callback() override = default;

    void SetCallback(SuccessCallback success_callback, ErrorCallback error_callback) {
        success_callback_ = std::move(success_callback);
        error_callback_ = std::move(error_callback);
    }

    void OnSuccess() override {
        if (success_callback_) {
            success_callback_();
        }
    }
    void OnError(int error_code, const V2TIMString& error_message) override {
        if (error_callback_) {
            error_callback_(error_code, error_message);
        }
    }

private:
    SuccessCallback success_callback_;
    ErrorCallback error_callback_;
};

auto callback = new Callback;
callback->SetCallback(
    [=]() {
        // Message recalled successfully
        delete callback;
    },
    [=](int error_code, const V2TIMString& error_message) {
        // The message failed to be recalled
        delete callback;
    });

V2TIMManager::GetInstance()->GetMessageManager()->RevokeMessage(message, callback);

// V2TIMAdvancedMsgListener
- (void)onRecvMessageRevoked:(NSString *)msgID operateUser:(V2TIMUserFullInfo *)operateUser reason:(NSString *)reason {
    // You need to change the bubble status for the message on the UI after receiving the message recall notification.
}

class AdvancedMsgListener final : public V2TIMAdvancedMsgListener {
public:
    /**
     * Received a new message
     *
     * @param message Message
     */
    /**
     * Received a message recall notification
     *
     * @param messageID Unique message ID
     */
    void OnRecvMessageRevoked(const V2TIMString& messageID, 
                              const V2TIMUserFullInfo &operateUser, 
                              const V2TIMString &reason) overrid {
        // `msgList` is the message list on the current chat interface
    }
    // Other members …
};

// Add an event listener for advanced messages. Keep `advancedMsgListener` valid before it is removed to ensure event callbacks are received.
AdvancedMsgListener advancedMsgListener;
V2TIMManager::GetInstance()->GetMessageManager()->AddAdvancedMsgListener(&advancedMsgListener);