Virtual Method



get_action_state_hint (
  GActionGroup* action_group,
  const gchar* action_name


Requests a hint about the valid range of values for the state of the named action within action_group.

If NULL is returned it either means that the action is not stateful or that there is no hint about the valid range of values for the state of the action.

If a GVariant array is returned then each item in the array is a possible value for the state. If a GVariant pair (ie: two-tuple) is returned then the tuple specifies the inclusive lower and upper bound of valid values for the state.

In any case, the information is merely a hint. It may be possible to have a state value outside of the hinted range and setting a value within the range may fail.

The return value (if non-NULL) should be freed with g_variant_unref() when it is no longer required.

Available since:2.28


action_name const gchar*

The name of the action to query.

 The data is owned by the caller of the function.
 The value is a NUL terminated UTF-8 string.

Return value

Returns: GVariant

The state range hint.

 The caller of the function takes ownership of the data, and is responsible for freeing it.
 The return value can be NULL.