MqttClientSubscribeMessage 方法 (MqttSubscribeMessage)

向服务器订阅一个主题消息，可以指定订阅的主题数组，订阅的质量等级，还有消息标识符
To subscribe to a topic message from the server, you can specify the subscribed topic array, the subscription quality level, and the message identifier

命名空间： HslCommunication.MQTT
程序集： HslCommunication (在 HslCommunication.dll 中) 版本：12.1.2.0 (12.1.2.0)

语法

C++

复制

public OperateResult SubscribeMessage(
	MqttSubscribeMessage subcribeMessage
)

Public Function SubscribeMessage ( 
	subcribeMessage As MqttSubscribeMessage
) As OperateResult

public:
OperateResult^ SubscribeMessage(
	MqttSubscribeMessage^ subcribeMessage
)

member SubscribeMessage : 
        subcribeMessage : MqttSubscribeMessage -> OperateResult

参数

subcribeMessage: 类型：HslCommunication.MQTTMqttSubscribeMessage
订阅的消息本体

返回值

类型：OperateResult
是否订阅成功

参见

引用

MqttClient 类

SubscribeMessage 重载

HslCommunication.MQTT 命名空间

MqttClientAddLanguageSpecificTextSet("LSTD92D4AB5_0?cpp=::|nu=.");SubscribeMessage 方法 (MqttSubscribeMessage)

参数

返回值

引用

MqttClientSubscribeMessage 方法 (MqttSubscribeMessage)