enum WindowState {
  //
  // 摘要:
  //     The window is neither minimized or maximized.
  Normal,
  //
  // 摘要:
  //     The window is minimized.
  Minimized,
  //
  // 摘要:
  //     The window is maximized.
  Maximized,
  //
  // 摘要:
  //     The window is fullscreen.
  FullScreen
}
