[osg-users] How can I know the number of GUIEventAdapter::USER in the message queue for GUIEventHandler?

[OpenSceneGraph Users]

sorry,I mean  what method  get the number of GUIEventAdapter::USER  in OSG?

在2020年11月12日星期四 UTC+8 上午3:51:21<OpenSceneGraph Users> 写道：

> EventHandlers are given single events not queues.
>
> If you want to process the while event queue then you'll need to do this 
> in the main loop.
>

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