Annotation Glossary

A

array

Parameter points to an array of items.

C

closure

This parameter is a 'user_data', for callbacks; many bindings can pass NULL here.

E

element-type

Generics and defining elements of containers and arrays.

N

nullable

NULL may be passed as the value in, out, in-out; or as a return value.

O

optional

NULL may be passed instead of a pointer to a location.

out

Parameter for returning results. Default is transfer full.

out caller-allocates

Out parameter, where caller must allocate storage.

S

scope async

The callback is valid until first called.

scope notified

The callback is valid until the GDestroyNotify argument is called.

T

transfer container

The caller owns the data container, but not the data inside it.

transfer floating

Alias for transfer none, used for objects with floating refs.

transfer full

The caller owns the data, and is responsible for free it.

transfer none

The data is owned by the callee, which is responsible of freeing it.