pub type PFN_vkRegisterDisplayEventEXT = unsafe extern "system" fn(_device: Device, _display: DisplayKHR, _display_event_info: *const DisplayEventInfoEXT, _allocator: *const AllocationCallbacks, _fence: *mut Fence) -> Result;pub type PFN_vkRegisterDisplayEventEXT = unsafe extern "system" fn(_device: Device, _display: DisplayKHR, _display_event_info: *const DisplayEventInfoEXT, _allocator: *const AllocationCallbacks, _fence: *mut Fence) -> Result;