type
  EventType* = enum
    Quit
    ResizedWindow
    MinimizedWindow
    RestoredWindow
    KeyPressed
    KeyReleased
    MousePressed
    MouseReleased
    MouseWheel
    GotFocus
    LostFocus

  Key* {.size: sizeof(cint), pure.} = enum
    UNKNOWN
    Escape
    F1
    F2
    F3
    F4
    F5
    F6
    F7
    F8
    F9
    F10
    F11
    F12
    NumberRowExtra1
    `1`
    `2`
    `3`
    `4`
    `5`
    `6`
    `7`
    `8`
    `9`
    `0`
    NumberRowExtra2
    NumberRowExtra3 # tilde, minus, plus
    A
    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
    Tab
    CapsLock
    ShiftL
    ShiftR
    CtrlL
    CtrlR
    SuperL
    SuperR
    AltL
    AltR
    Space
    Enter
    Backspace
    LetterRow1Extra1
    LetterRow1Extra2 # open bracket, close brackt, backslash
    LetterRow2Extra1
    LetterRow2Extra2
    LetterRow2Extra3 # semicolon, quote
    LetterRow3Extra1
    LetterRow3Extra2
    LetterRow3Extra3 # comma, period, slash
    Up
    Down
    Left
    Right
    PageUp
    PageDown
    Home
    End
    Insert
    Delete
    PrintScreen
    ScrollLock
    Pause

  MouseButton* {.size: sizeof(cint), pure.} = enum
    UNKNOWN
    Mouse1
    Mouse2
    Mouse3 # Left, middle, right

  Event* = object
    case eventType*: EventType
    of KeyPressed, KeyReleased:
      key*: Key
    of MousePressed, MouseReleased:
      button*: MouseButton
    of MouseWheel:
      amount*: float32
    of GotFocus:
      discard
    of LostFocus:
      discard
    else:
      discard