-Annotation Glossary

array

Parameter points to an array of items.

closure

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

element-type

Generics and defining elements of containers and arrays.

inout

Parameter for input and for returning results. Default is transfer full.

nullable

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

optional

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

out

Parameter for returning results. Default is transfer full.

scope async

The callback is valid until first called.

scope call

The callback is valid only during the call to the method.

skip

Exposed in C code, not necessarily available in other languages.

transfer container

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

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.

type

Override the parsed C type with given type.

virtual

This is the invoker for a virtual method.