Type Alias StringCallback 

pub type StringCallback = Option<unsafe extern "C" fn(ptr: *const c_char, len: usize, target: *mut c_void)>;

Aliased Type

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

Variants

None

No value.

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

Some value of type T.