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.
constructor
This symbol is a constructor, not a static method.
D
default
Default parameter value (in case a function which shadows this one via rename-to has fewer parameters).
destroy
This parameter is a 'destroy_data', for callbacks.
E
element-type
Generics and defining elements of containers and arrays.
I
in
Parameter for input. Default is transfer none.
inout
Parameter for input and for returning results. Default is transfer full.
N
not nullable
NULL must not be passed as the value in, out, in-out; or as a return value.
not optional
NULL must not be passed as the pointer to a location.
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 callee-allocates
Out parameter, where callee must allocate storage.
out caller-allocates
Out parameter, where caller must allocate storage.
R
rename-to
Rename the original symbol's name to SYMBOL.
S
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.
T
transfer container
Free data container after the code is done.
transfer full
Free data after the code is done.
transfer none
Don't free data after the code is done.
type
Override the parsed C type with given type.