Type Alias PIO_WORKITEM_ROUTINE_EX 

pub type PIO_WORKITEM_ROUTINE_EX = Option<unsafe extern "system" fn()>;

Aliased Type

pub enum PIO_WORKITEM_ROUTINE_EX {
    None,
    Some(unsafe extern "system" fn()),
}

Variants

None

No value.

Some(unsafe extern "system" fn())

Some value of type T.