Action.blockActivateFrom

Warning gtk_action_block_activate_from has been deprecated since version 2.16 and should not be used in newly-written code. activatables are now responsible for activating the action directly so this doesnt apply anymore. Disables calls to the gtk_action_activate() function by signals on the given proxy widget. This is used to break notification loops for things like check or radio actions. This function is intended for use by action implementations. Since 2.4