`nn::friends::CTR::AttachToEventNotification` Function

Syntax

Result AttachToEventNotification(
     nn::os::Event * pEvent
);

	Name	Description
out	pEvent	Specifies a pointer to the `nn::os::Event` that notifies of changes. Initialize this ahead of time using the `nn::os::Event::Initialize` function.

Returns the result of the operation.

Value	Description
`ResultSuccess`	Process succeeded.
`ResultInvalidPointer`	An invalid pointer was passed in as an argument.
`ResultInvalidHandle`	An invalid `nn::os::Event` handle was passed in as an argument.
`ResultNotInitialized`	The friend presence library has not been initialized.
Other	Some other result may be returned as a result of factors such as the daemon's internal state.

Specifies an event that notifies of changes in the local host's login state and friends' login states.

When this function is called multiple times, only the last specified nn::os::Event object is signaled.

CONFIDENTIAL