C Specification

The XrEventDataBaseHeader structure is defined as:

// Provided by XR_VERSION_1_0
typedef struct XrEventDataBaseHeader {
    XrStructureType    type;
    const void*        next;
} XrEventDataBaseHeader;

Members

Parameter Descriptions

  • type is the XrStructureType of this structure. This base structure itself has no associated XrStructureType value.

  • next is NULL or a pointer to the next structure in a structure chain. No such structures are defined in core OpenXR.

Description

The XrEventDataBaseHeader is a generic structure used to identify the common event data elements.

Upon receipt, the XrEventDataBaseHeader pointer should be type-cast to a pointer of the appropriate event data based on the type parameter.

Valid Usage (Implicit)

  • type must be one of the following XrStructureType values: XR_TYPE_EVENT_DATA_DISPLAY_REFRESH_RATE_CHANGED_FB, XR_TYPE_EVENT_DATA_EVENTS_LOST, XR_TYPE_EVENT_DATA_EYE_CALIBRATION_CHANGED_ML, XR_TYPE_EVENT_DATA_HEADSET_FIT_CHANGED_ML, XR_TYPE_EVENT_DATA_INSTANCE_LOSS_PENDING, XR_TYPE_EVENT_DATA_INTERACTION_PROFILE_CHANGED, XR_TYPE_EVENT_DATA_LOCALIZATION_CHANGED_ML, XR_TYPE_EVENT_DATA_MAIN_SESSION_VISIBILITY_CHANGED_EXTX, XR_TYPE_EVENT_DATA_MARKER_TRACKING_UPDATE_VARJO, XR_TYPE_EVENT_DATA_PERF_SETTINGS_EXT, XR_TYPE_EVENT_DATA_REFERENCE_SPACE_CHANGE_PENDING, XR_TYPE_EVENT_DATA_SESSION_STATE_CHANGED, XR_TYPE_EVENT_DATA_SPACE_ERASE_COMPLETE_FB, XR_TYPE_EVENT_DATA_SPACE_LIST_SAVE_COMPLETE_FB, XR_TYPE_EVENT_DATA_SPACE_QUERY_COMPLETE_FB, XR_TYPE_EVENT_DATA_SPACE_QUERY_RESULTS_AVAILABLE_FB, XR_TYPE_EVENT_DATA_SPACE_SAVE_COMPLETE_FB, XR_TYPE_EVENT_DATA_SPACE_SET_STATUS_COMPLETE_FB, XR_TYPE_EVENT_DATA_SPACE_SHARE_COMPLETE_FB, XR_TYPE_EVENT_DATA_SPATIAL_ANCHOR_CREATE_COMPLETE_FB, XR_TYPE_EVENT_DATA_VISIBILITY_MASK_CHANGED_KHR, XR_TYPE_EVENT_DATA_VIVE_TRACKER_CONNECTED_HTCX

  • next must be NULL or a valid pointer to the next structure in a structure chain

See Also

XR_VERSION_1_0, XrStructureType, xrPollEvent

Document Notes

For more information, see the OpenXR Specification

This page is extracted from the OpenXR Specification. Fixes and changes should be made to the Specification, not directly.

Copyright

Copyright 2014-2024, The Khronos Group Inc.

This work is licensed under a Creative Commons Attribution 4.0 International License.