Type Alias PhidgetDictionary_OnUpdateCallback 

pub type PhidgetDictionary_OnUpdateCallback = Option<unsafe extern "C" fn(ch: PhidgetDictionaryHandle, ctx: *mut c_void, key: *const c_char, value: *const c_char)>;

Aliased Type

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

Variants

None

No value.

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

Some value of type T.