Type Alias RTWQPERIODICCALLBACK 

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

Aliased Type

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

Variants

None

No value.

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

Some value of type T.