private void gameFieldPictureBox_Paint(object sender, PaintEventArgs e) { game.Draw(e.Graphics); if (game.IsCellInGameField(illumination.X, illumination.Y) && game.Cells[illumination.X, illumination.Y].CellState == CellState.Closed) { e.Graphics.FillRectangle(Brushes.Gray, illumination.X * Game.CellSize, illumination.Y * Game.CellSize, Game.CellSize, Game.CellSize); } }