Queries the current state of the named action within action_group.
If the action is not stateful then null will be returned. If the action is stateful then the type of the return value is the type given by gio.action_group.ActionGroup.getActionStateType.
The return value (if non-null) should be freed with glib.variant.VariantG.unref when it is no longer required.
the name of the action to query
the current state of the action
Queries the current state of the named action within action_group.
If the action is not stateful then null will be returned. If the action is stateful then the type of the return value is the type given by gio.action_group.ActionGroup.getActionStateType.
The return value (if non-null) should be freed with glib.variant.VariantG.unref when it is no longer required.