Type Alias ObjectReferenceCallback 

pub type ObjectReferenceCallback = Option<unsafe extern "system" fn(root: usize, reference: *mut usize, clientdata: *mut c_void) -> BOOL>;

Aliased Type

pub enum ObjectReferenceCallback {
    None,
    Some(unsafe extern "system" fn(usize, *mut usize, *mut c_void) -> BOOL),
}

Variants

None

No value.

Some(unsafe extern "system" fn(usize, *mut usize, *mut c_void) -> BOOL)

Some value of type T.