TAtkLayer

type TAtkLayer = (

  TAtkLayerMinValue = - $7FFFFFFF,

  ATK_LAYER_INVALID = 0,

  ATK_LAYER_BACKGROUND = 1,

  ATK_LAYER_CANVAS = 2,

  ATK_LAYER_WIDGET = 3,

  ATK_LAYER_MDI = 4,

  ATK_LAYER_POPUP = 5,

  ATK_LAYER_OVERLAY = 6,

  ATK_LAYER_WINDOW = 7,

  TAtkLayerMaxValue = $7FFFFFFF

);