Method

GIRepositoryUnionInfoget_discriminator

since: 2.80

Declaration

GIConstantInfo*
gi_union_info_get_discriminator (
  GIUnionInfo* info,
  size_t n
)

Description

Obtain the discriminator value assigned for n-th union field, i.e. the n-th union field is the active one if the discriminator contains this constant.

If the union is not discriminated, NULL is returned.

Available since: 2.80

Parameters

n

Type: size_t

A union field index.

Return value

Type: GIConstantInfo

The GIConstantInfo, or NULL if the union is not discriminated. Free it with gi_base_info_unref() when done.

The caller of the method takes ownership of the data, and is responsible for freeing it.

The return value can be NULL.