Type Alias PFN_vkFreeFunction 

pub type PFN_vkFreeFunction = Option<unsafe extern "system" fn(*mut c_void, *mut c_void)>;

https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/PFN_vkFreeFunction.html

Aliased Type

pub enum PFN_vkFreeFunction {
    None,
    Some(unsafe extern "system" fn(*mut c_void, *mut c_void)),
}

Variants

None

No value.

Some(unsafe extern "system" fn(*mut c_void, *mut c_void))

Some value of type T.