GdkSetting
   
       Specifies the kind of modification applied to a setting in a GdkEventSetting.
   
  | Value | Symbolic name | Description | 
|   0 | Gdk::SETTING_ACTION_NEW | A setting was added. | 
|   1 | Gdk::SETTING_ACTION_CHANGED | A setting was changed. | 
|   2 | Gdk::SETTING_ACTION_DELETED | A setting was deleted. |