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IVRSystem::PollNextEvent

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Merwan edited this page Jul 11, 2016 · 3 revisions

bool PollNextEvent( VREvent_t *pEvent, uint32_t uncbVREvent ) )
bool PollNextEventWithPose( TrackingUniverseOrigin eOrigin, uint32_t uncbVREvent , vr::VREvent_t *pEvent, vr::TrackedDevicePose_t *pTrackedDevicePose )

Returns the next event in the queue.

  • VREvent_t *pEvent - An event structure to fill with the next event.
  • uint32_t uncbVREvent should be the size in bytes of the VREvent_t struct.
  • TrackingUniverseOrigin eOrigin - The tracking system to return the event's pose in.
  • TrackedDevicePose_t *pTrackedDevicePose - A pose struct to fill with the returned event's pose. Must not be NULL.

Description

Returns true and fills pEvent with the next event in the queue. If there is no event waiting, PollNextEvent returns false.

If the application needs to know exactly where the tracked device associated with the event was when the event occured, it can use the PollNextEventWithPose function. The pose returned with this function will always be older than now and should not be used for rendering. For events with no associated device this function returns an invalid pose.

See also: VREvent_t

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