Type Alias CallbackThreadUnsetFnPtr 

pub type CallbackThreadUnsetFnPtr = Option<unsafe extern "system" fn() -> HRESULT>;

Aliased Type

pub enum CallbackThreadUnsetFnPtr {
    None,
    Some(unsafe extern "system" fn() -> HRESULT),
}

Variants

None

No value.

Some(unsafe extern "system" fn() -> HRESULT)

Some value of type T.