Type Alias LoggingCallback 

pub type LoggingCallback = Option<unsafe extern "C" fn(*mut c_void, *const c_char)>;

Aliased Type

pub enum LoggingCallback {
    None,
    Some(unsafe extern "C" fn(*mut c_void, *const i8)),
}

Variants

None

No value.

Some(unsafe extern "C" fn(*mut c_void, *const i8))

Some value of type T.