Function vkGetMemoryWin32HandlePropertiesKHR 

pub unsafe extern "system" fn vkGetMemoryWin32HandlePropertiesKHR(
    device: VkDevice,
    handleType: VkExternalMemoryHandleTypeFlagBits,
    handle: HANDLE,
    pMemoryWin32HandleProperties: *mut VkMemoryWin32HandlePropertiesKHR,
) -> VkResult

Available if built with prototypes.