MTLSharedEvent_id(3)

# MTLSharedEvent_id(3) Manual Page

## Name

MTLSharedEvent_id - Metal MTLSharedEvent type reference

## C Specification

The type `id<MTLSharedEvent>` is defined in Apple’s Metal framework, but to remove an unnecessary compile time dependency, an incomplete type definition of MTLSharedEvent_id is provided in the Vulkan headers:

    // Provided by VK_EXT_metal_objects
    #ifdef __OBJC__
    @protocol MTLSharedEvent;
    typedef __unsafe_unretained id<MTLSharedEvent> MTLSharedEvent_id;
    #else
    typedef void* MTLSharedEvent_id;
    #endif

## See Also

VK_EXT_metal_objects

## Document Notes

For more information, see the Vulkan Specification.

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

## Copyright

Copyright 2014-2026 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0