Does C++ Wrapper Support Shared Subscription?

[W2Q3Q1]

Hello,

Shared subscription worked well on my PC while using mosquitto_sub & mosquitto_pub at MQTT V5. But when I tried to subscribe "$share/a/b" using C++ wrapper (mosquittopp.h) and sent message using "mosquitto_pub -t b -m hello -V mqttv5", my client received nothing.

Does C++ wrapper support shared subscription?

Thanks a lot!

[W2Q3Q1]

I have already configured the client to use MQTT V5 just after the creation of the C++ object and before the connect function being called:

int mqtt_version = MQTT_PROTOCOL_V5; mosquittoClient->opts_set( MOSQ_OPT_PROTOCOL_VERSION, &mqtt_version );

[W2Q3Q1]

I have also tried C version interfaces, but shared subscription is still not OK. Is there some other configurations I should use?