Type Alias PrismAvailabilityCallback 

pub type PrismAvailabilityCallback = Option<unsafe extern "C" fn(userdata: *mut c_void, backend: PrismBackendId, name: *const c_char, available: bool)>;

The type of a function invoked when a backend’s runtime availability changes.

Aliased Type

pub enum PrismAvailabilityCallback {
    None,
    Some(unsafe extern "C" fn(*mut c_void, u64, *const i8, bool)),
}

Variants

None

No value.

Some(unsafe extern "C" fn(*mut c_void, u64, *const i8, bool))

Some value of type T.