QMqttMessageStatusProperties Class | Qt MQTT 6.4.1

- Qt 6.4
- Qt MQTT
- C++ Classes
- QMqttMessageStatusProperties
- Qt 6.4.1 Reference Documentation

# QMqttMessageStatusProperties Class

The QMqttMessageStatusProperties class represents additional information provided by the server during message delivery. More...

Header: | #include <QMqttMessageStatusProperties>
CMake: | find_package(Qt6 REQUIRED COMPONENTS Mqtt) target_link_libraries(mytarget PRIVATE Qt6::Mqtt)
qmake: | QT += mqtt
Since: | Qt 5.12

- List of all members, including inherited members

## Public Functions

QString | reason() const
QMqtt::ReasonCode | reasonCode() const
QMqttUserProperties | userProperties() const

## Detailed Description

Depending on the QoS level of a message being sent by QMqttClient::publish(), a server reports the state of delivery. Additionally to the QMqtt::MessageStatus, complementary information might be included by the server. These are exposed to users via QMqttMessageStatusProperties.

Note: Message status properties are part of the MQTT 5.0 specification and cannot be used when connecting with a lower protocol level. See QMqttClient::ProtocolVersion for more information.

## Member Function Documentation

### QString QMqttMessageStatusProperties::reason() const

Returns the reason string of a failed message delivery.

### QMqtt::ReasonCode QMqttMessageStatusProperties::reasonCode() const

Returns the reason code of a failed message delivery.

### QMqttUserProperties QMqttMessageStatusProperties::userProperties() const

Returns properties specified in conjunction with a message.