void Board::paintEvent(QPaintEvent*)

{

	QPainter painter(this);

	int d=40;

	//画10条横线

	for(int =1;i<=10;i++)//从1开始，就不会使得棋盘处在边界

	{

		painter.drawLine(QPoint(d,i*d),QPoint(9*d,i*d));

	}

	//画9条竖线

	for(int i=1;i<=9;i++)

	{

		if(i==1||i==9)

		{

			painter.drawLine(QPoint(i*d,d),QPoint(i*d,10*d));

		}

		else

		{

			painter.drawLine(QPoint(i*d,d),QPoint(i*d,5*d));

			painter.drawLine(QPoint(i*d,6d),QPoint(i*d,10*d));

		}

	}

	//九宫格

	painter.drawLine(QPoint(4*d,1*d),QPoint(6*d,3*d));

	painter.drawLine(QPoint(6*d,1*d),QPoint(4*d,3*d));

	painter.drawLine(QPoint(4*d,8*d),QPoint(6*d,10*d));

	painter.drawLine(QPoint(6*d,8*d),QPoint(4*d,10*d));

}