enum  	Key { 
  Unknown = -1, 
  A = 0, 
  B, 
  C, 
  D, 
  E, 
  F, 
  G, 
  H, 
  I, 
  J, 
  K, 
  L, 
  M, 
  N, 
  O, 
  P, 
  Q, 
  R, 
  S, 
  T, 
  U, 
  V, 
  W, 
  X, 
  Y, 
  Z, 
  Num0, 
  Num1, 
  Num2, 
  Num3, 
  Num4, 
  Num5, 
  Num6, 
  Num7, 
  Num8, 
  Num9, 
  Escape, 
  LControl, 
  LShift, 
  LAlt, 
  LSystem, 
  RControl, 
  RShift, 
  RAlt, 
  RSystem, 
  Menu, 
  LBracket, 
  RBracket, 
  SemiColon, 
  Comma, 
  Period, 
  Quote, 
  Slash, 
  BackSlash, 
  Tilde, 
  Equal, 
  Dash, 
  Space, 
  Return, 
  BackSpace, 
  Tab, 
  PageUp, 
  PageDown, 
  End, 
  Home, 
  Insert, 
  Delete, 
  Add, 
  Subtract, 
  Multiply, 
  Divide, 
  Left, 
  Right, 
  Up, 
  Down, 
  Numpad0, 
  Numpad1, 
  Numpad2, 
  Numpad3, 
  Numpad4, 
  Numpad5, 
  Numpad6, 
  Numpad7, 
  Numpad8, 
  Numpad9, 
  F1, 
  F2, 
  F3, 
  F4, 
  F5, 
  F6, 
  F7, 
  F8, 
  F9, 
  F10, 
  F11, 
  F12, 
  F13, 
  F14, 
  F15, 
  Pause, 
  KeyCount