Creates a new action.
The created action is stateless. See gio.simple_action.SimpleAction.newStateful to create an action that has state.
the name of the action
the type of parameter that will be passed to handlers for the #GSimpleAction::activate signal, or null for no parameter
a new #GSimpleAction
Creates a new action.
The created action is stateless. See gio.simple_action.SimpleAction.newStateful to create an action that has state.