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Register a handler for EntityToken expired events.

Syntax

Parameters

queue   XTaskQueueHandle
optional
The async queue the callback should be invoked on. context   void*
optional
Optional pointer to data used by the event handler. handler   PFEntityTokenExpiredEventHandler* The event handler, XUserRegisterForChangeEvent. token   PFRegistrationToken*
output
The token for unregistering this callback

Return value

Type: HRESULT Result code for this API operation. Possible values are S_OK, E_PF_NOT_INITIALIZED, or E_FAIL.

Requirements

Header: PFEntity.h

See also

PFEntity members
Last modified on August 3, 2026