Type Alias PFEATURE_STATE_CHANGE_CALLBACK 

pub type PFEATURE_STATE_CHANGE_CALLBACK = Option<unsafe extern "system" fn(context: *const c_void)>;

Aliased Type

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

Variants

None

No value.

Some(unsafe extern "system" fn(*const c_void))

Some value of type T.