Virtual Method
GioActionGroupget_action_state_type
since: 2.28
Declaration [src]
const GVariantType*
get_action_state_type (
GActionGroup* action_group,
const gchar* action_name
)
Description [src]
Queries the type of the state of the named action within
action_group.
If the action is stateful then this function returns the
GVariantType of the state. All calls to
g_action_group_change_action_state() must give a GVariant of this
type and g_action_group_get_action_state() will return a GVariant
of the same type.
If the action is not stateful then this function will return NULL.
In that case, g_action_group_get_action_state() will return NULL
and you must not call g_action_group_change_action_state().
The state type of a particular action will never change but it is possible for an action to be removed and for a new action to be added with the same name but a different state type.
Available since: 2.28
Parameters
action_name-
Type:
const gchar*The name of the action to query.
The data is owned by the caller of the method. The value is a NUL terminated UTF-8 string.
Return value
Type: GVariantType
The state type, if the action is stateful.
| The returned data is owned by the instance. |
The return value can be NULL. |