GIRepository.TypeInfo.argument_from_hash_pointer

### Method

# GIRepository TypeInfoargument_from_hash_pointer

since: 2.80

#### Declaration [src]

    void
    gi_type_info_argument_from_hash_pointer (
      GITypeInfo* info,
      void* hash_pointer,
      GIArgument* arg
    )

#### Description [src]

Convert a data pointer from a GLib data structure to a `GIArgument`.

GLib data structures, such as `GList`, `GSList`, and `GHashTable`, all store data pointers.

In the case where the list or hash table is storing single types rather than structs, these data pointers may have values stuffed into them via macros such as `GPOINTER_TO_INT`.

Use this function to ensure that all values are correctly extracted from stuffed pointers, regardless of the machine’s architecture or endianness.

This function fills in the appropriate field of `arg` with the value extracted from `hash_pointer`, depending on the storage type of `info`.

Available since: 2.80

#### Parameters

`hash_pointer`

  Type: `void*`

  A pointer, such as a `GHashTable` data pointer.

  The argument can be `NULL`.
  The data is owned by the caller of the method.

`arg`

  Type: `GIArgument`

  A `GIArgument` to fill in.

  The argument will be set by the function.
  The returned data is owned by the instance.