def set_size(self, width, height):
if self._fullscreen:
raise WindowException('Cannot set size of fullscreen window.')
width, height = self._client_to_window_size(width, height)
_user32.SetWindowPos(self._hwnd, 0, 0, 0, width, height,
(SWP_NOZORDER | SWP_NOMOVE | SWP_NOOWNERZORDER))
