Sets the "action" and possibly the "target" attribute of menu_item.
The format of detailed_action is the same format parsed by
g_action_parse_detailed_name().
See g_menu_item_set_action_and_target() or
g_menu_item_set_action_and_target_value() for more flexible (but
slightly less convenient) alternatives.
See also g_menu_item_set_action_and_target_value() for a description of
the semantics of the action and target attributes.
Since 2.32
Sets the "action" and possibly the "target" attribute of menu_item. The format of detailed_action is the same format parsed by g_action_parse_detailed_name(). See g_menu_item_set_action_and_target() or g_menu_item_set_action_and_target_value() for more flexible (but slightly less convenient) alternatives. See also g_menu_item_set_action_and_target_value() for a description of the semantics of the action and target attributes. Since 2.32