Queries the type of the state of
If the action is stateful (e.g. created with
g_simple_action_new_stateful()) then this function returns the
GVariantType of the state. This is the type of the initial value
given as the state. All calls to
g_action_change_state() must give a
GVariant of this type and
g_action_get_state() will return a
GVariant of the same type.
If the action is not stateful (e.g. created with g_simple_action_new())
then this function will return
NULL. In that case,
NULL and you must not call g_action_change_state().
The state type, if the action is stateful.
|The data is owned by the instance.|
|The return value can be |