where to find resource if I want to better/further understand gazebo::common::events

edit

I want to learn more about Event::connect disconnect

but there is no tutorial on official website

API Documentation about "event" is very short,and I can't understand http://osrf-distributions.s3.amazonaw...11event11Events.html#ab0fefed82c8ab22f67cf5a3870bcb9ef

where to find resource if I want to better/further understand gazebo::common::events ??

Because I encountered a problem as following:

I have two plugin,

one world plugin "evaluationplatform", another one is model plugin "armcontrol"

in onUpdate() of the world plugin "evaluationplatform", I use DisconnectWorldUpdateBegin(updateconnection) to Disconnect "onUpdate()" under some condition

I tested these two plugin independently, and they worked well as I want,

but, when I used them together ,things went wrong

onUpdate() of the world plugin "evaluationplatform" cannot be disconnected

and I guess the critical point is in model plugin "arm_control"

So .I want to learn more about Event::connect & disconnect to find out the problem

Thank you!!

這裡有沒有說中文的夥伴啊～～？