Returns a value indicating whether there are any Visual Studio Analyzer clients interested in events generated by the calling RPC-based component. Possible return values are S_OK or S_FALSE; a return value of S_FALSE means that events need not be generated.
The VSAFireEvent method calls VSAIsActive anyway, so if generating an event is low impact, you might choose to omit the VSAIsActive test. If generating an event does impact the system, call VSAIsActive to make sure a client is interested in the event first.
Syntax
HRESULT VSAIsActive([in] long vaaId);
Parameters
vaaID
Unique identifier for this component session.